1. and , Proc. 7th Internat. Symp. Discharges and Electrical Insulation in Vacuum, Academy Sciences of the USSR, Siberian Branch, Novosibirsk 1976 (p. 213).
2. and , in: Emissionnaya sylnototchnaya electronica, Izd. Nauka, Novosibirsk 1984 (in Russian).