1. G. É. Levin, Transactions of the 1st All-Union Conference on CRTs and Photoelectric Pyrometers, Leningrad (1966).
2. Usp. Fiz. Nauk.,104, No. 3, 509 (1971).
3. G. Pfeffer, Nucl. Instr. Methods,23 (1963).
4. G. É. Levin, M. E. Grishin, A. M. Potapov, and A. E. Melamid, Élektronnaya Tekhnika,4, No. 4 (1968).