Francl82

M. M. Francl, W. J. Pietro, W. J. Hehre, J. S. Binkley, D. J. DeFrees, J. A. Pople, and M. S. Gordon, “Self-Consistent Molecular Orbital Methods. 23. A polarization-type basis set for 2nd-row elements,” J. Chem. Phys., 77 (1982) 3654-65. DOI: 10.1063/1.444267