Tishchenko, I. G.; Bubel', O. N.; Konovalov, V. A.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1981 , vol. 17, # 1 p. 29 - 33
Khimiya Geterotsiklicheskikh Soedinenii, 1981 , # 1 p. 38 - 42

Tishchenko, I. G.; Bubel', O. N.; Konovalov, V. A.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1981 , vol. 17, # 1 p. 29 - 33
Khimiya Geterotsiklicheskikh Soedinenii, 1981 , # 1 p. 38 - 42