1. D. G. Bourgin, Phys. Rev. 29, 794 (1927); PHRVAO0031-899X
2. D. G. Bourgin, 32, 237 (1928).PHRVAO0031-899X, Phys. Rev.
3. E. Bartholomé, Z. Physik. Chemie (Leipzig) B23, 131 (1933).ZPCBAL0372-9664
4. E. C. Kemble, J. Chem. Phys. 3, 316 (1935).JCPSA60021-9606
5. A. J. Wells and E. Bright Wilson, Jr., J. Chem. Phys. 9, 659 (1941); JCPSA60021-9606