1. Ubachs, W., TerMeulen, J.J., Dymanus, A.: Can. J. Phys. 62 (1984) 1374.
2. Saito, S., Goto, M.: Ann. Rev. Inst. for Molecular Science, Japan, 1992, p.26.
3. Engels, B., Peyerimhoff, S.D.: Mol. Phys. 67 (1989) 583.
4. Boudjaadar, D., Brion, J., Chollet, P., Guelachvili, G., Vervloet, M.: J. Mol. Spectrosc. 119 (1986) 352.
5. Chackerian, C., Guelachvili, G., Lopez-Pineiro, A., Tipping, R.H.: J. Chem. Phys. 90 (1989) 641.