Citation:
Shao, Y. ; Gan, Z. ; Epifanovsky, E. ; Gilbert, A. T. B. ; Wormit, M. ; Kussmann, J. ; Lange, A. W. ; Behn, A. ; Deng, J. ; Feng, X. ; et al. Advances In Molecular Quantum Chemistry Contained In The Q-Chem 4 Program Package. Molecular PhysicsMolecular Physics 2015, 113, 184 - 215.