1. J. M. Daniels and P. B. Dorain, J. Chem. Phys. 40, 1160 (1964); JCPSA60021-9606
2. J. M. Daniels and P. B. Dorain, Bull. Am. Phys. Soc. 9, 682 (1964).BAPSA60003-0503
3. C. C. McDonald, J. Chem. Phys. 39, 2587 (1963).JCPSA60021-9606
4. H. E. Radford, J. Chem. Phys. 40, 2732 (1964).JCPSA60021-9606
5. F. X. Powell and D. R. Lide, Jr., J. Chem. Phys. 41, 1413 (1964).JCPSA60021-9606