General atomic and molecular electronic structure system.
Michael W. SchmidtKim K. BaldridgeJerry A. BoatzSteven T. ElbertMark S. GordonJan H. JensenShiro KosekiNikita MatsunagaKiet A. NguyenShujun SuTheresa L. WindusMichel DupuisJohn A. Montgomery Jr.Published in: J. Comput. Chem. (1993)