Higher-order vibration intensities of polyatomic molecules . Application to diatomic and bent XY2 molecules</SBT>
A treatment of the intensities of vibration rotation bands for polyatomic molecules is given using a method involving contact transformations. The general results are applied to the cases of diatomic and bent XY2 molecules, leading to explicit expressions relating the observed intensities to the anharmonic coefficients of the expansions of the potential energy and the dipole moment. The case of the sulfur dioxide molecule is computed.