Johansson, Mikael P Ab initio, density functional theory, and semi-empirical calculations. [electronic resource] - Methods in molecular biology (Clifton, N.J.) 2013 - 3-27 p. digital Publication Type: Journal Article ISSN: 1940-6029 Standard No.: 10.1007/978-1-62703-017-5_1 doi Subjects--Topical Terms: ElectronsQuantum Theory