1. Slawsky, Z. I., De Wette, F. W. and De Groot, S. R., Supplemento al volume VII, Serie IX del Nuovo Cimento, N. 2 (1950).
2. International conference on ultrasonic;Slawsky,1951
3. See Bethe, H. A. and Teller, E., Aberdeen Proving Grounds, Ballistic Research Lab. Report No. X-117 (1941).
4. Calculation of Vibrational Relaxation Times in Gases
5. Energy Exchange in Molecular Collisions