Kolos, N. N.; Shishkin, O. V.; Orlov, V. D.; Struchkov, Yu. T.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1995 , vol. 31, # 4 p. 485 - 491
Khimiya Geterotsiklicheskikh Soedinenii, 1995 , # 4 p. 551 - 557

Kolos, N. N.; Shishkin, O. V.; Orlov, V. D.; Struchkov, Yu. T.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1995 , vol. 31, # 4 p. 485 - 491
Khimiya Geterotsiklicheskikh Soedinenii, 1995 , # 4 p. 551 - 557