Gready77

J. E. Gready, G. B. Bacskay, and N. S. Hush, “Finite-field Method Calculations. III. Dipole moment gradients, polarisability gradients and field-induced shifts in bond lengths, vibrational levels, spectroscopic constants and dipole functions — Application to LiH,” Chem. Phys., 24 (1977) 333-41. DOI: 10.1016/0301-0104(77)85093-3