Ganin, E. V.; Anikin, V. F.; Rozynov, B. V.; Makarov, V. F.; Kamalov, G. L.
Journal of Organic Chemistry USSR (English Translation), 1985 , vol. 21, # 1 p. 142 - 145
Zhurnal Organicheskoi Khimii, 1985 , vol. 21, # 1 p. 157 - 160

Ganin, E. V.; Anikin, V. F.; Rozynov, B. V.; Makarov, V. F.; Kamalov, G. L.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1984 , vol. 20, # 9 p. 1052
Khimiya Geterotsiklicheskikh Soedinenii, 1984 , vol. 20, # 9 p. 1280