1. W. F. Simpson and A. C. Albrecht, J. Am. Chem. Soc. 77, 4454 (1955).JACSAT0002-7863
2. G. T. Pott and J. Kommandeur, J. Chem. Phys. 47, 395 (1967), following paper.JCPSA60021-9606
3. P. L. Nordio, Z. G. Soos, and H. M. McConnell, Ann. Rev. Phys. Chem. 17, 237 (1966).ARPLAP0066-426X
4. J. Bolton, Mol. Phys. 5, 615 (1962).MOPHAM0026-8976
5. C. C. J. Roothaan, Rev. Mod. Phys. 23, 69 (1951); RMPHAT0034-6861