1. D. K. Kollerov and K. D. Mgaloblishvili, Izmeritel'. Tekh., No. 7 (1968).
2. D. K. Kollerov and K. D. Mgaloblishvili, Izmeritel'. Tekh., No. 11 (1969).
3. K. D. Mgaloblishvili, Izmeritel'. Tekh., No. 2 (1971).
4. Chemist's Handbook [in Russian], Vol. 3, Khimiya, Moscow-Leningrad (1964), p. 906.
5. Procedural Instructions No. 196, ?Testing gas analyzers for the content of gasoline vapors in air,? Standartgiz, Moscow (1963).