1. V. A. Koptyug, Izv. Akad. Nauk SSSR, Ser. Khim., 1974, 1081 [Bull. Acad. Sci. USSR, Div. Chem. Sci., 1974, 23 (Engl. Transl.)].
2. Sovremennye problemy khimii karbonievykh ionov [Contemporary Problems of Carbonium Ions Chemistry], Ed V. A. Koptyug, Nauka, Novosibirsk, 1975, 412 pp. (in Russian).
3. V. G. Shubin, V. A. Koptyug, Izv. Siberian Branch Akad. Nauk SSSR, Ser. Khim., 1976, No. 4, Issue 2, 131 (in Russian).
4. V. A. Koptyug, V. G. Shubin, Zh. Org. Khim., 1980, 16, 1977 [J. Org. Chem. USSR, 1980, 16 (Engl. Transl.)].
5. V. G. Shubin, Izv. Siberian Branch Akad. Nauk SSSR, Ser. Khim., 1980, No. 7, Issue 3, 18 (in Russian).