Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 17, # 10 p. 1057 - 1062
Khimiya Geterotsiklicheskikh Soedinenii, , vol. 17, # 10 p. 1406 - 1411

Pyzhov, V. K.; Zaplishnyi, V. N.; Balyan, A. A.; Grigoryan, R. T.; Pogosyan, G. M.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1981 , vol. 17, # 10 p. 1057 - 1062
Khimiya Geterotsiklicheskikh Soedinenii, 1981 , vol. 17, # 10 p. 1406 - 1411