Prikazchikova, L. P.; Khutova, B. M.; Cherkasov, V. M.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1982 , vol. 18, # 7 p. 746 - 748
Khimiya Geterotsiklicheskikh Soedinenii, 1982 , # 7 p. 974 - 976

Khutova, B. M.; Klyuchko, S. V.; Prikazchikova, L. P.; Cherkasov, V. M.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1985 , vol. 21, # 4 p. 468 - 471
Khimiya Geterotsiklicheskikh Soedinenii, 1985 , vol. 21, # 4 p. 559 - 561