1. DIRAC, a relativistic ab initio electronic structure program, Release DIRAC16 (2016), written by Jensen HJAa, Bast R, Saue T, Visscher L, with contributions from Bakken V, Dyall KG, Dubillard S, Ekström U, Eliav E, Enevoldsen T, Faßhauer E, Fleig T, Fossgaard O, A. Gomes ASP, Helgaker T, Henriksson J, Iliaš M, Jacob ChR, Knecht S, Komorovský S, Kullie O, Lærdahl JK, Larsen CV, Lee YS, Nataraj HS, Nayak MK, Norman P, Olejniczak G, Olsen J, Park YC, Pedersen JK, Pernpointner M, Di Remigio R, Ruud K, Sałek P, Schimmelpfennig B, Shee A, Sikkema J, Thorvaldsen AJ, Thyssen J, van Stralen J, Villaume S, Visser O, Winther T, Yamamoto S.
http://www.diracprogram.org
. Accessed 03 Dec 2017
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