Molecular constants for the ground state of PH 2 Birss, F. W. ; Lessard, G. ; Thrush, B. A. ; Ramsay, D. A. Abstract Publication: Journal of Molecular Spectroscopy Pub Date: March 1982 DOI: 10.1016/0022-2852(82)90100-X Bibcode: 1982JMoSp..92..269B