1. Groszek, A. J., Nature, 182, 1152 (1958).
2. Kiselev, A. V., Effect of Surface Dehydration and Pore Size of Silica on Heat of Adsorption (Acad. Sci., U.S.S.R.; 1957; in English).
3. Kiselev, A. V., Dreving, V. P., and Runov, A. R., C.R. Acad. Sci., U.S.S.R., 46, 283, b (1945), in English.