1. A. P. Alekseev, V. Ivlev, and G. N. Nechiporenko, Zavod. Lab.,5, 20 (1967).
2. K. N. Semenenko, A. P. Savchenkova, and B. M. Bulychev, Zh. Neorgan. Khimii,18, 2364 (1973).
3. Yu. I. Rubtsov, E. P. Kirpichev, and G. B. Manelis, Zh. Fiz. Khimii,43, 146 (1969).
4. V. P. Glushko (editor), Thermal Constants of Substances, Handbook [in Russian], No. 5, Nauka (1971).
5. Yu. I. Rubtsov and E. P. Kirpichev, Zh. Fiz. Khimii,45, 1526 (1971).