I. Tubert-Brohman, C. R. W. Guimarães, and W. L. Jorgensen, “Extension of the PDDG/PM3 Semiempirical Molecular Orbit Method to Sulfur, Silicon, and Phosphorus,” J. Chem. Theory and Comput., 1 (2005) 817-23. DOI: 10.1021/ct0500287
I. Tubert-Brohman, C. R. W. Guimarães, and W. L. Jorgensen, “Extension of the PDDG/PM3 Semiempirical Molecular Orbit Method to Sulfur, Silicon, and Phosphorus,” J. Chem. Theory and Comput., 1 (2005) 817-23. DOI: 10.1021/ct0500287
