DIRAC

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We work long days and late nights to improve the DIRAC code which we distribute free of charge. We therefore ask you to acknowledge any use of the DIRAC program suite that results in published material.
We recommend citing the employed version (see below) as well as the general paper:

Trond Saue, Radovan Bast, Andre Severo Pereira Gomes, Hans Jørgen Aagaard Jensen, Lucas Visscher, Ignacio Agustín Aucar, Roberto Di Remigio, Kenneth G. Dyall, Ephraim Eliav, Elke Faßhauer, Timo Fleig, Loıc Halbert, Erik Donovan Hedegård, Benjamin Helmich-Paris, Miroslav Iliaš, Christoph R. Jacob, Stefan Knecht, Jon K Laerdahl, Marta L. Vidal, Malaya K Nayak, Małgorzata Olejniczak, Jógvan Magnus Haugaard Olsen, Markus Pernpointner, Bruno Senjean, Avijit Shee, Ayaki Sunaga, Joost N. P. van Stralen, [[https://doi.org/10.1063/5.0004844|J. Chem. Phys.]] 152 (2020) 204104 

----

==== DIRAC22 ====

DIRAC, a relativistic ab initio electronic structure program,
Release DIRAC22 (2022),
written by T. Saue, L. Visscher, H. J. Aa. Jensen, R. Bast, and A. S. P. Gomes, 
with contributions from I. A. Aucar, V. Bakken, C. Chibueze, J. Creutzberg, K. G. Dyall, S. Dubillard,
U. Ekström, E. Eliav, T. Enevoldsen, E. Faßhauer, T. Fleig,
O. Fossgaard, L. Halbert, E. D. Hedegård, 
T. Helgaker,  B. Helmich-Paris, J. Henriksson, M. van Horn, M. Iliaš,
Ch. R. Jacob, S. Knecht, S. Komorovský, O. Kullie, J. K. Lærdahl,
C. V. Larsen, Y. S. Lee, N. H. List, H. S. Nataraj, M. K. Nayak, P. Norman,
G. Olejniczak, J. Olsen, J. M. H. Olsen, A. Papadopoulos, Y. C. Park, J. K. Pedersen, M. Pernpointner,
J. V. Pototschnig, R. Di Remigio, M. Repisky, K. Ruud, P. Sałek, B. Schimmelpfennig, B. Senjean, A. Shee, J. Sikkema, A. Sunaga, 
A. J. Thorvaldsen, J. Thyssen, J. van Stralen, M. L. Vidal, S. Villaume, O. Visser,
T. Winther, S. Yamamoto and X. Yuan (available at http://dx.doi.org/YY.YYYY/zenodo.XXXXXXXX, see also http://www.diracprogram.org).


bibtex entry:
  @Misc{DIRAC22,
        note = "{DIRAC}, a relativistic ab initio electronic structure program,
        Release {DIRAC22} (2022),
        written by T.~Saue, L.~Visscher, H.~J.~{\relax Aa}.~Jensen, R.~Bast and A.~S.~P.~Gomes,   
        with contributions from I.~A.~Aucar, V.~Bakken, C.~Chibueze, J.~Creutzberg, K.~G.~Dyall, 
        S.~Dubillard, U.~Ekstr{\"o}m, E.~Eliav, T.~Enevoldsen, E.~Fa{\ss}hauer, T.~Fleig, O.~Fossgaard, 
        L.~Halbert, E.~D.~Hedeg{\aa}rd, T.~Helgaker, B.~Helmich--Paris, J.~Henriksson, M.~van~Horn, 
        M.~Ilia{\v{s}}, Ch.~R.~Jacob, S.~Knecht, S.~Komorovsk{\'y}, O.~Kullie, J.~K.~L{\ae}rdahl, C.~V.~Larsen, 
        Y.~S.~Lee, N.~H.~List, H.~S.~Nataraj, M.~K.~Nayak, P.~Norman, G.~Olejniczak, 
        J.~Olsen, J.~M.~H.~Olsen, A.~Papadopoulos, Y.~C.~Park, J.~K.~Pedersen, M.~Pernpointner,
        J.~V.~Pototschnig, R.~di~Remigio, M.~Repisky, K.~Ruud, P.~Sa{\l}ek, B.~Schimmelpfennig, 
        B.~Senjean, A.~Shee, J.~Sikkema, A.~Sunaga, A.~J.~Thorvaldsen, J.~Thyssen, 
        J.~van~Stralen, M.~L.~Vidal, S.~Villaume, O.~Visser, T.~Winther, S.~Yamamoto and X.~Yuan
        (available at \url{http://dx.doi.org/YY.YYYY/zenodo.XXXXXXXXXX}, 
        see also  \url{http://www.diracprogram.org})"}

--------

==== DIRAC21 ====

DIRAC, a relativistic ab initio electronic structure program,
Release DIRAC21 (2021),
written by R. Bast, A. S. P. Gomes, T. Saue, L. Visscher, and H. J. Aa. Jensen, 
with contributions from I. A. Aucar, V. Bakken, K. G. Dyall, S. Dubillard,
U. Ekström, E. Eliav, T. Enevoldsen, E. Faßhauer, T. Fleig,
O. Fossgaard, L. Halbert, E. D. Hedegård, 
T. Helgaker,  B. Helmich-Paris, J. Henriksson, M. Iliaš,
Ch. R. Jacob, S. Knecht, S. Komorovský, O. Kullie, J. K. Lærdahl,
C. V. Larsen, Y. S. Lee, N. H. List, H. S. Nataraj, M. K. Nayak, P. Norman,
G. Olejniczak, J. Olsen, J. M. H. Olsen, A. Papadopoulos, Y. C. Park, J. K. Pedersen, M. Pernpointner,
J. V. Pototschnig, R. Di Remigio, M. Repisky, K. Ruud, P. Sałek, B. Schimmelpfennig, B. Senjean, A. Shee, J. Sikkema, A. Sunaga, 
A. J. Thorvaldsen, J. Thyssen, J. van Stralen, M. L. Vidal, S. Villaume, O. Visser,
T. Winther, and S. Yamamoto (available at http://dx.doi.org/10.5281/zenodo.4836496, see also http://www.diracprogram.org).


bibtex entry:
  @Misc{DIRAC21,
        note = "{DIRAC}, a relativistic ab initio electronic structure program,
        Release {DIRAC21} (2021),
        written by R.~Bast, A.~S.~P.~Gomes, T.~Saue, L.~Visscher, and H.~J.~{\relax Aa}.~Jensen,  
        with contributions from I.~A.~Aucar, V.~Bakken, K.~G.~Dyall, S.~Dubillard, U.~Ekstr{\"o}m, 
        E.~Eliav, T.~Enevoldsen, E.~Fa{\ss}hauer, T.~Fleig, O.~Fossgaard, L.~Halbert, 
        E.~D.~Hedeg{\aa}rd, T.~Helgaker, B.~Helmich--Paris, J.~Henriksson, M.~Ilia{\v{s}},  
        Ch.~R.~Jacob, S.~Knecht, S.~Komorovsk{\'y}, O.~Kullie, J.~K.~L{\ae}rdahl, C.~V.~Larsen, 
        Y.~S.~Lee, N.~H.~List, H.~S.~Nataraj, M.~K.~Nayak, P.~Norman, G.~Olejniczak, 
        J.~Olsen, J.~M.~H.~Olsen, A.~Papadopoulos, Y.~C.~Park, J.~K.~Pedersen, M.~Pernpointner,
        J.~V.~Pototschnig, R.~di~Remigio, M.~Repisky, K.~Ruud, P.~Sa{\l}ek, B.~Schimmelpfennig, 
        B.~Senjean, A.~Shee, J.~Sikkema, A.~Sunaga, A.~J.~Thorvaldsen, J.~Thyssen, 
        J.~van~Stralen, M.~L.~Vidal, S.~Villaume, O.~Visser, T.~Winther, and S.~Yamamoto 
        (available at \url{http://dx.doi.org/10.5281/zenodo.4836496}, 
        see also  \url{http://www.diracprogram.org})"}

----

==== DIRAC19 ====

DIRAC, a relativistic ab initio electronic structure program,
Release DIRAC19 (2019),
written by A. S. P. Gomes, T. Saue, L. Visscher, H. J. Aa. Jensen, and R. Bast,
with contributions from I. A. Aucar, V. Bakken, K. G. Dyall, S. Dubillard,
U. Ekström, E. Eliav, T. Enevoldsen, E. Faßhauer, T. Fleig,
O. Fossgaard, L. Halbert, E. D. Hedegård, 
T. Helgaker,  B. Helmich-Paris, J. Henriksson, M. Iliaš,
Ch. R. Jacob, S. Knecht, S. Komorovský, O. Kullie, J. K. Lærdahl,
C. V. Larsen, Y. S. Lee, H. S. Nataraj, M. K. Nayak, P. Norman,
G. Olejniczak, J. Olsen, J. M. H. Olsen, Y. C. Park, J. K. Pedersen, M. Pernpointner,
R. Di Remigio, K. Ruud, P. Sałek, B. Schimmelpfennig, B. Senjean, A. Shee, J. Sikkema,
A. J. Thorvaldsen, J. Thyssen, J. van Stralen, M. L. Vidal, S. Villaume, O. Visser,
T. Winther, and S. Yamamoto (available at http://dx.doi.org/10.5281/zenodo.3572669, see also http://www.diracprogram.org).


bibtex entry:
  @Misc{DIRAC19,
        note = "{DIRAC}, a relativistic ab initio electronic structure program,
        Release {DIRAC19} (2019),
        written by A.~S.~P.~Gomes, T.~Saue, L.~Visscher, H.~J.~{\relax Aa}.~Jensen, and R.~Bast, 
        with contributions from I.~A.~Aucar, V.~Bakken, K.~G.~Dyall, S.~Dubillard, U.~Ekstr{\"o}m, 
        E.~Eliav, T.~Enevoldsen, E.~Fa{\ss}hauer, T.~Fleig, O.~Fossgaard, L.~Halbert, 
        E.~D.~Hedeg{\aa}rd, B.~Heimlich--Paris, T.~Helgaker, J.~Henriksson, M.~Ilia{\v{s}},  
        Ch.~R.~Jacob, S.~Knecht, S.~Komorovsk{\'y}, O.~Kullie, J.~K.~L{\ae}rdahl, C.~V.~Larsen, 
        Y.~S.~Lee, H.~S.~Nataraj, M.~K.~Nayak, P.~Norman, G.~Olejniczak, J.~Olsen, J.~M.~H.~Olsen,
        Y.~C.~Park, J.~K.~Pedersen, M.~Pernpointner, R.~di~Remigio, K.~Ruud, P.~Sa{\l}ek, 
        B.~Schimmelpfennig, B.~Senjean, A.~Shee, J.~Sikkema, A.~J.~Thorvaldsen, J.~Thyssen, 
        J.~van~Stralen, M.~L.~Vidal, S.~Villaume, O.~Visser, T.~Winther, and S.~Yamamoto 
        (available at \url{http://dx.doi.org/10.5281/zenodo.3572669}, 
        see also  \url{http://www.diracprogram.org})"}

----


==== DIRAC18 ====

DIRAC, a relativistic ab initio electronic structure program,
Release DIRAC18 (2018),
written by T. Saue, L. Visscher, H. J. Aa. Jensen, and R. Bast,
with contributions from V. Bakken, K. G. Dyall, S. Dubillard,
U. Ekström, E. Eliav, T. Enevoldsen, E. Faßhauer, T. Fleig,
O. Fossgaard, A. S. P. Gomes, E. D. Hedegård, T. Helgaker, J. Henriksson, M. Iliaš,
Ch. R. Jacob, S. Knecht, S. Komorovský, O. Kullie, J. K. Lærdahl,
C. V. Larsen, Y. S. Lee, H. S. Nataraj, M. K. Nayak, P. Norman,
G. Olejniczak, J. Olsen, J. M. H. Olsen, Y. C. Park, J. K. Pedersen, M. Pernpointner,
R. Di Remigio, K. Ruud, P. Sałek, B. Schimmelpfennig, A. Shee, J. Sikkema,
A. J. Thorvaldsen, J. Thyssen, J. van Stralen, S. Villaume, O. Visser,
T. Winther, and S. Yamamoto (available at https://doi.org/10.5281/zenodo.2253986, see also http://www.diracprogram.org).


bibtex entry:
  @Misc{DIRAC18,
        note = "{DIRAC}, a relativistic ab initio electronic structure program,
        Release {DIRAC18} (2018),
        written by T.~Saue, L.~Visscher, H.~J.~{\relax Aa}.~Jensen, and R.~Bast, 
        with contributions from V.~Bakken, K.~G.~Dyall, S.~Dubillard, U.~Ekstr{\"o}m, 
        E.~Eliav, T.~Enevoldsen, E.~Fa{\ss}hauer, T.~Fleig, O.~Fossgaard, A.~S.~P.~Gomes, 
        E.~D.~Hedeg{\aa}rd, T.~Helgaker, J.~Henriksson, M.~Ilia{\v{s}}, Ch.~R.~Jacob, S.~Knecht, 
        S.~Komorovsk{\'y}, O.~Kullie, J.~K.~L{\ae}rdahl, C.~V.~Larsen, Y.~S.~Lee, 
        H.~S.~Nataraj, M.~K.~Nayak, P.~Norman, G.~Olejniczak, J.~Olsen, J.~M.~H.~Olsen, Y.~C.~Park,   
        J.~K.~Pedersen, M.~Pernpointner, R.~di~Remigio, K.~Ruud, P.~Sa{\l}ek, B.~Schimmelpfennig, 
        A.~Shee, J.~Sikkema, A.~J.~Thorvaldsen, J.~Thyssen, J.~van~Stralen, S.~Villaume, O.~Visser, 
        T.~Winther, and S.~Yamamoto (available at \url{https://doi.org/10.5281/zenodo.2253986}, 
        see also  \url{http://www.diracprogram.org})"}

----

==== DIRAC17 ====

DIRAC, a relativistic ab initio electronic structure program,
Release DIRAC17 (2017),
written by L. Visscher, H. J. Aa. Jensen, R. Bast, and T. Saue,
with contributions from V. Bakken, K. G. Dyall, S. Dubillard,
U. Ekström, E. Eliav, T. Enevoldsen, E. Faßhauer, T. Fleig,
O. Fossgaard, A. S. P. Gomes, E. D. Hedegård, T. Helgaker, J. Henriksson, M. Iliaš,
Ch. R. Jacob, S. Knecht, S. Komorovský, O. Kullie, J. K. Lærdahl,
C. V. Larsen, Y. S. Lee, H. S. Nataraj, M. K. Nayak, P. Norman,
G. Olejniczak, J. Olsen, J. M. H. Olsen, Y. C. Park, J. K. Pedersen, M. Pernpointner,
R. Di Remigio, K. Ruud, P. Sałek, B. Schimmelpfennig, A. Shee, J. Sikkema,
A. J. Thorvaldsen, J. Thyssen, J. van Stralen, S. Villaume, O. Visser,
T. Winther, and S. Yamamoto (see http://www.diracprogram.org).


bibtex entry:
  @Misc{DIRAC17,
        note = "{DIRAC}, a relativistic ab initio electronic structure program,
        Release {DIRAC17} (2017),
        written by L.~Visscher, H.~J.~{\relax Aa}.~Jensen, R.~Bast, and T.~Saue,
        with contributions from V.~Bakken, K.~G.~Dyall, S.~Dubillard, U.~Ekstr{\"o}m, 
        E.~Eliav, T.~Enevoldsen, E.~Fa{\ss}hauer, T.~Fleig, O.~Fossgaard, A.~S.~P.~Gomes, 
        E.~D.~Hedeg{\aa}rd, T.~Helgaker, J.~Henriksson, M.~Ilia{\v{s}}, Ch.~R.~Jacob, S.~Knecht, 
        S.~Komorovsk{\'y}, O.~Kullie, J.~K.~L{\ae}rdahl, C.~V.~Larsen, Y.~S.~Lee, 
        H.~S.~Nataraj, M.~K.~Nayak, P.~Norman, G.~Olejniczak, J.~Olsen, J.~M.~H.~Olsen, Y.~C.~Park,   
        J.~K.~Pedersen, M.~Pernpointner, R.~di~Remigio, K.~Ruud, P.~Sa{\l}ek, B.~Schimmelpfennig, 
        A.~Shee, J.~Sikkema, A.~J.~Thorvaldsen, J.~Thyssen, J.~van~Stralen, S.~Villaume, O.~Visser, 
        T.~Winther, and S.~Yamamoto (see \url{http://www.diracprogram.org})"}

----

==== DIRAC16 ====

DIRAC, a relativistic ab initio electronic structure program,
Release DIRAC16 (2016),
written by H. J. Aa. Jensen, R. Bast, T. Saue, and L. Visscher,
with contributions from V. Bakken, K. G. Dyall, S. Dubillard,
U. Ekström, E. Eliav, T. Enevoldsen, E. Faßhauer, T. Fleig,
O. Fossgaard, A. S. P. Gomes, T. Helgaker, J. Henriksson, M. Iliaš,
Ch. R. Jacob, S. Knecht, S. Komorovský, O. Kullie, J. K. Lærdahl,
C. V. Larsen, Y. S. Lee, H. S. Nataraj, M. K. Nayak, P. Norman,
G. Olejniczak, J. Olsen, Y. C. Park, J. K. Pedersen, M. Pernpointner,
R. Di Remigio, K. Ruud, P. Sałek, B. Schimmelpfennig, A. Shee, J. Sikkema,
A. J. Thorvaldsen, J. Thyssen, J. van Stralen, S. Villaume, O. Visser,
T. Winther, and S. Yamamoto (see http://www.diracprogram.org).


bibtex entry:
  @Misc{DIRAC16,
        note = "{DIRAC}, a relativistic ab initio electronic structure program,
        Release {DIRAC16} (2016),
        written by H.~J.~{\relax Aa}.~Jensen, R.~Bast, T.~Saue, and L.~Visscher,
        with contributions from V.~Bakken, K.~G.~Dyall, S.~Dubillard, U.~Ekstr{\"o}m, 
        E.~Eliav, T.~Enevoldsen, E.~Fa{\ss}hauer, T.~Fleig, O.~Fossgaard, A.~S.~P.~Gomes, 
        T.~Helgaker, J.~Henriksson, M.~Ilia{\v{s}}, Ch.~R.~Jacob, S.~Knecht, 
        S.~Komorovsk{\'y}, O.~Kullie, J.~K.~L{\ae}rdahl, C.~V.~Larsen, Y.~S.~Lee, 
        H.~S.~Nataraj, M.~K.~Nayak, P.~Norman, G.~Olejniczak, J.~Olsen, Y.~C.~Park, J.~K.~Pedersen, 
        M.~Pernpointner, R.~di~Remigio, K.~Ruud, P.~Sa{\l}ek, B.~Schimmelpfennig, A.~Shee, J.~Sikkema, 
        A.~J.~Thorvaldsen, J.~Thyssen, J.~van~Stralen, S.~Villaume, O.~Visser, T.~Winther,
        and S.~Yamamoto (see \url{http://www.diracprogram.org})"}

----

==== DIRAC15 ====

DIRAC, a relativistic ab initio electronic structure program,
Release DIRAC15 (2015),
written by H. J. Aa. Jensen, R. Bast, T. Saue, and L. Visscher,
with contributions from V. Bakken, K. G. Dyall, S. Dubillard,
U. Ekstroem, E. Eliav, T. Enevoldsen, E. Fasshauer, T. Fleig,
O. Fossgaard, A. S. P. Gomes, T. Helgaker, J. Henriksson, M. Ilias,
Ch. R. Jacob, S. Knecht, S. Komorovsky, O. Kullie, J. K. Laerdahl,
C. V. Larsen, Y. S. Lee, H. S. Nataraj, M. K. Nayak, P. Norman,
G. Olejniczak, J. Olsen, Y. C. Park, J. K. Pedersen, M. Pernpointner,
R. Di Remigio, K. Ruud, P. Salek, B. Schimmelpfennig, J. Sikkema,
A. J. Thorvaldsen, J. Thyssen, J. van Stralen, S. Villaume, O. Visser,
T. Winther, and S. Yamamoto (see http://www.diracprogram.org).

bibtex entry:
  @Misc{DIRAC15,
        note = "DIRAC, a relativistic ab initio electronic structure program,
        Release DIRAC15 (2015),
        written by R. Bast, T. Saue, L. Visscher, and H. J. Aa. Jensen,
        with contributions from V. Bakken, K. G. Dyall, S. Dubillard,
        U. Ekstroem, E. Eliav, T. Enevoldsen, E. Fasshauer, T. Fleig,
        O. Fossgaard, A. S. P. Gomes, T. Helgaker, J. Henriksson, M. Ilias,
        Ch. R. Jacob, S. Knecht, S. Komorovsky, O. Kullie, J. K. Laerdahl,
        C. V. Larsen, Y. S. Lee, H. S. Nataraj, M. K. Nayak, P. Norman,
        G. Olejniczak, J. Olsen, Y. C. Park, J. K. Pedersen, M. Pernpointner,
        R. Di Remigio, K. Ruud, P. Salek, B. Schimmelpfennig, J. Sikkema,
        A. J. Thorvaldsen, J. Thyssen, J. van Stralen, S. Villaume, O. Visser,
        T. Winther, and S. Yamamoto (see http://www.diracprogram.org)."}

----

==== DIRAC14 ====

DIRAC, a relativistic ab initio electronic structure program, Release DIRAC14 (2014), written by T. Saue, L. Visscher, H. J. Aa. Jensen, and R. Bast, with contributions from V. Bakken, K. G. Dyall, S. Dubillard, U. Ekström, E. Eliav, T. Enevoldsen, E. Faßhauer, T. Fleig, O. Fossgaard, A. S. P. Gomes, T. Helgaker, J. Henriksson, M. Iliaš, Ch. R. Jacob, S. Knecht, S. Komorovský, O. Kullie, C. V. Larsen, J. K. Lærdahl, Y. S. Lee, H. S. Nataraj, P. Norman, G. Olejniczak, J. Olsen, Y. C. Park, J. K. Pedersen, M. Pernpointner, R. di Remigio, K. Ruud, P. Sałek, B. Schimmelpfennig, J. Sikkema, A. J. Thorvaldsen, J. Thyssen, J. van Stralen, S. Villaume, O. Visser, T. Winther, and S. Yamamoto (see http://www.diracprogram.org).

bibtex entry:
  @Misc{DIRAC14,
        note = "{DIRAC}, a relativistic ab initio electronic structure program,
        Release {DIRAC14} (2014),
        written by T.~Saue, L.~Visscher, H.~J.~{\relax Aa}.~Jensen, and R.~Bast.
        with contributions from V.~Bakken, K.~G.~Dyall, S.~Dubillard,
        U.~Ekstr{\"o}m, E.~Eliav, T.~Enevoldsen, E.~Fa{\ss}hauer, T.~Fleig, O.~Fossgaard,
        A.~S.~P.~Gomes, T.~Helgaker, J.~K.~L{\ae}rdahl, Y.~S.~Lee, J.~Henriksson,
        M.~Ilia{\v{s}}, Ch.~R.~Jacob, S.~Knecht, S.~Komorovsk{\'y}, O.~Kullie, C.~V.~Larsen, H.~S.~Nataraj,
        P.~Norman, G.~Olejniczak, J.~Olsen, Y.~C.~Park, J.~K.~Pedersen, M.~Pernpointner, R.~di~Remigio,     
        K.~Ruud, P.~Sa{\l}ek, B.~Schimmelpfennig, J.~Sikkema, A.~J.~Thorvaldsen,
        J.~Thyssen, J.~van~Stralen, S.~Villaume, O.~Visser, T.~Winther,
        and S.~Yamamoto (see \url{http://www.diracprogram.org})"}

----

==== DIRAC13 ====

DIRAC, a relativistic ab initio electronic structure program, Release DIRAC13 (2013), written by L. Visscher, H. J. Aa. Jensen, R. Bast, and T. Saue, with contributions from V. Bakken, K. G. Dyall, S. Dubillard, U. Ekström, E. Eliav, T. Enevoldsen, E. Faßhauer, T. Fleig, O. Fossgaard, A. S. P. Gomes, T. Helgaker, J. K. Lærdahl, Y. S. Lee, J. Henriksson, M. Iliaš, Ch. R. Jacob, S. Knecht, S. Komorovský, O. Kullie, C. V. Larsen, H. S. Nataraj, P. Norman, G. Olejniczak, J. Olsen, Y. C. Park, J. K. Pedersen, M. Pernpointner, K. Ruud, P. Sałek, B. Schimmelpfennig, J. Sikkema, A. J. Thorvaldsen, J. Thyssen, J. van Stralen, S. Villaume, O. Visser, T. Winther, and S. Yamamoto (see http://www.diracprogram.org).

bibtex entry:
  @Misc{DIRAC13,
        note = "{DIRAC}, a relativistic ab initio electronic structure program,
        Release {DIRAC13} (2013),
        written by L.~Visscher, H.~J.~{\relax Aa}.~Jensen, R.~Bast, and T.~Saue,
        with contributions from V.~Bakken, K.~G.~Dyall, S.~Dubillard,
        U.~Ekstr{\"o}m, E.~Eliav, T.~Enevoldsen, E.~Fa{\ss}hauer, T.~Fleig, O.~Fossgaard,
        A.~S.~P.~Gomes, T.~Helgaker, J.~K.~L{\ae}rdahl, Y.~S.~Lee, J.~Henriksson,
        M.~Ilia{\v{s}}, Ch.~R.~Jacob, S.~Knecht, S.~Komorovsk{\'y}, O.~Kullie, C.~V.~Larsen, H.~S.~Nataraj,
        P.~Norman, G.~Olejniczak, J.~Olsen, Y.~C.~Park, J.~K.~Pedersen, M.~Pernpointner,      
        K.~Ruud, P.~Sa{\l}ek, B.~Schimmelpfennig, J.~Sikkema, A.~J.~Thorvaldsen,
        J.~Thyssen, J.~van~Stralen, S.~Villaume, O.~Visser, T.~Winther,
        and S.~Yamamoto
        (see http://www.diracprogram.org)"
       }

----

==== DIRAC12 ====

DIRAC, a relativistic ab initio electronic structure program, Release DIRAC12 (2012), written by H. J. Aa. Jensen, R. Bast, T. Saue, and L. Visscher, with contributions from V. Bakken, K. G. Dyall, S. Dubillard, U. Ekström, E. Eliav, T. Enevoldsen, T. Fleig, O. Fossgaard, A. S. P. Gomes, T. Helgaker, J. K. Lærdahl, Y. S. Lee, J. Henriksson, M. Iliaš, Ch. R. Jacob, S. Knecht, S. Komorovský, O. Kullie, C. V. Larsen, H. S. Nataraj, P. Norman, G. Olejniczak, J. Olsen, Y. C. Park, J. K. Pedersen, M. Pernpointner, K. Ruud, P. Sałek, B. Schimmelpfennig, J. Sikkema, A. J. Thorvaldsen, J. Thyssen, J. van Stralen, S. Villaume, O. Visser, T. Winther, and S. Yamamoto (see http://www.diracprogram.org).

bibtex entry:
  @Misc{DIRAC12,
        note = "{DIRAC}, a relativistic ab initio electronic structure program,
        Release {DIRAC12} (2012),
        written by H.~J.~{\relax Aa}.~Jensen, R.~Bast, T.~Saue, and L.~Visscher,
        with contributions from V.~Bakken, K.~G.~Dyall, S.~Dubillard,
        U.~Ekstr{\"o}m, E.~Eliav, T.~Enevoldsen, T.~Fleig, O.~Fossgaard,
        A.~S.~P.~Gomes, T.~Helgaker, J.~K.~L{\ae}rdahl, Y.~S.~Lee, J.~Henriksson,
        M.~Ilia{\v{s}}, Ch.~R.~Jacob, S.~Knecht, S.~Komorovsk{\'y}, O.~Kullie, C.~V.~Larsen, H.~S.~Nataraj,
        P.~Norman, G.~Olejniczak, J.~Olsen, Y.~C.~Park, J.~K.~Pedersen, M.~Pernpointner,      
        K.~Ruud, P.~Sa{\l}ek, B.~Schimmelpfennig, J.~Sikkema, A.~J.~Thorvaldsen,
        J.~Thyssen, J.~van~Stralen, S.~Villaume, O.~Visser, T.~Winther,
        and S.~Yamamoto
        (see http://www.diracprogram.org)"
       }

----

==== DIRAC11 ====

DIRAC, a relativistic ab initio electronic structure program, Release DIRAC11 (2011), written by R. Bast, H. J. Aa. Jensen, T. Saue, and L. Visscher, with contributions from V. Bakken, K. G. Dyall, S. Dubillard, U. Ekström, E. Eliav, T. Enevoldsen, T. Fleig, O. Fossgaard, A. S. P. Gomes, T. Helgaker, J. K. Lærdahl, J. Henriksson, M. Iliaš, Ch. R. Jacob, S. Knecht, C. V. Larsen, H. S. Nataraj, P. Norman, G. Olejniczak, J. Olsen, J. K. Pedersen, M. Pernpointner, K. Ruud, P. Sałek, B. Schimmelpfennig, J. Sikkema, A. J. Thorvaldsen, J. Thyssen, J. van Stralen, S. Villaume, O. Visser, T. Winther, and S. Yamamoto (see http://dirac.chem.vu.nl).

bibtex entry:
  @Misc{DIRAC11,
        note = "{DIRAC}, a relativistic ab initio electronic structure program,
        Release {DIRAC11} (2011),
        written by R.~Bast, H.~J.~{\relax Aa}.~Jensen, T.~Saue, and L.~Visscher,
        with contributions from V.~Bakken, K.~G.~Dyall, S.~Dubillard,
        U.~Ekstr{\"o}m, E.~Eliav, T.~Enevoldsen, T.~Fleig, O.~Fossgaard,
        A.~S.~P.~Gomes, T.~Helgaker, J.~K.~L{\ae}rdahl, J.~Henriksson,
        M.~Ilia{\v{s}}, Ch.~R.~Jacob, S.~Knecht, C.~V.~Larsen, H.~S.~Nataraj,
        P.~Norman, G.~Olejniczak, J.~Olsen, J.~K.~Pedersen, M.~Pernpointner,
        K.~Ruud, P.~Sa{\l}ek, B.~Schimmelpfennig, J.~Sikkema, A.~J.~Thorvaldsen,
        J.~Thyssen, J.~van~Stralen, S.~Villaume, O.~Visser, T.~Winther,
        and S.~Yamamoto
        (see http://dirac.chem.vu.nl)"
       }

----

==== DIRAC10 ====

DIRAC, a relativistic ab initio electronic structure program, Release DIRAC10 (2010), written by T. Saue, L. Visscher and H. J. Aa. Jensen, with new contributions from R. Bast, K. G. Dyall, U. Ekström, E. Eliav, T. Enevoldsen, T. Fleig, A. S. P. Gomes, J. Henriksson, M. Iliaš, Ch. R. Jacob, S. Knecht, H. S. Nataraj, P. Norman, J. Olsen, M. Pernpointner, K. Ruud, B. Schimmelpfennig, J. Sikkema, A. Thorvaldsen, J. Thyssen, S. Villaume, and S. Yamamoto (see http://dirac.chem.vu.nl).

bibtex entry:
  @Misc{DIRAC10,
        note = "{DIRAC}, a relativistic ab initio electronic structure program, Release {DIRAC10} (2010),
        written by T.~Saue, L.~Visscher and H.~J.~{\relax Aa}.~Jensen,
        with contributions from R.~Bast, K.~G.~Dyall,
        U.~Ekstr{\"o}m, E.~Eliav, T.~Enevoldsen, T.~Fleig, A.~S.~P.~Gomes,
        J.~Henriksson, M.~Ilia{\v{s}}, Ch.~R.~Jacob, S.~Knecht, H.~S.~Nataraj, P.~Norman,
        J.~Olsen, M.~Pernpointner, K.~Ruud, B.~Schimmelpfennig, J.~Sikkema,
        A.~Thorvaldsen, J.~Thyssen, S.~Villaume, and S.~Yamamoto
        (see http://dirac.chem.vu.nl)"
       }

----

==== DIRAC08 ====

DIRAC, a relativistic ab initio electronic structure program, Release DIRAC08 (2008), written by L. Visscher, H. J. Aa. Jensen, and T. Saue, with new contributions from R. Bast, S. Dubillard, K. G. Dyall, U. Ekström, E. Eliav, T. Fleig, A. S. P. Gomes, T. U. Helgaker, J. Henriksson, M. Iliaš, Ch. R. Jacob, S. Knecht, P. Norman, J. Olsen, M. Pernpointner, K. Ruud, P. Sałek, and J. Sikkema (see http://dirac.chem.sdu.dk).

bibtex entry:
  @Misc{DIRAC08,
        note = "{DIRAC}, a relativistic ab initio electronic structure program, Release {DIRAC08} (2008),
        written by L.~Visscher, H.~J.~{\relax Aa}.~Jensen, and T.~Saue,
        with new contributions from R.~Bast, S.~Dubillard, K.~G.~Dyall,
        U.~Ekstr{\"o}m, E.~Eliav, T.~Fleig, A.~S.~P.~Gomes, T.~U.~Helgaker,
        J.~Henriksson, M.~Ilia{\v{s}}, Ch.~R.~Jacob, S.~Knecht, P.~Norman,
        J.~Olsen, M.~Pernpointner, K.~Ruud, P.~Sa{\l}ek, and J.~Sikkema
        (see http://dirac.chem.sdu.dk)"
       }

----

==== DIRAC04 ====

DIRAC, a relativistic ab initio electronic structure program, Release DIRAC04 (2004), written by H. J. Aa. Jensen, T. Saue, and L. Visscher, with contributions from V. Bakken, E. Eliav, T. Enevoldsen, T. Fleig, O. Fossgaard, T. Helgaker, J. Lærdahl, C. V. Larsen, P. Norman, J. Olsen, M. Pernpointner, J. K. Pedersen, K. Ruud, P. Sałek, J. N. P. van Stralen, J. Thyssen, O. Visser, and T. Winther (see http://dirac.chem.sdu.dk).

bibtex entry:
  @Misc{DIRAC04,
        note = "{DIRAC}, a relativistic ab initio electronic structure program, Release {DIRAC04.0} (2004),
        written by H.~J.~{\relax Aa}.~Jensen, T.~Saue, and L.~Visscher,
        with contributions from V.~Bakken, E.~Eliav, T.~Enevoldsen,
        T.~Fleig, O.~Fossgaard, T.~U.~Helgaker,
        J.~L{\ae}rdahl, C.~V.~Larsen, P.~Norman, J.~Olsen,
        M.~Pernpointner, J.~K.~Pedersen, K.~Ruud, P.~Sa{\l}ek,
        J.~N.~P.~van Stralen, J.~Thyssen, O.~Visser, and T.~Winther
        (see http://dirac.chem.sdu.dk)"
       }