1. M. Popov, Thermometry and Calorimetry (Moscow State University, 1954).
2. N. Shimanskaya, Calorimetric Method for Investigation of Radioactive Substances (in press).
3. J. Hollander, J. Perlman and G. Seaborg, Rev. Mod. Phys. 25, 429 (1953).
4. T. Kohman, D. Ames and J. Sedlet, Nat. Nuclear Energy Ser., Div. IV 14B, 1675 (1949).
5. F. Ward, C. Wynn-Williams and M. Cave, Proc. Roy. Soc. (London) A 125, 713 (1929).