Solution of the anharmonic vibrational problem for the H2O, H2Se, NO2, and O3 molecules by the variational method Pavlyuchko, A. I. ; Lozenko, G. F. ; Khovrin, G. V. ; Gribov, L. A. Abstract Publication: Optics and Spectroscopy Pub Date: January 1982 Bibcode: 1982OptSp..52...37P