Gaponov, A. A.; Solomko, Z. F.; Bozhanova, N. Ya.; Pantyukh, E. I.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1989 , vol. 25, # 7 p. 836
Khimiya Geterotsiklicheskikh Soedinenii, 1989 , vol. 25, # 7 p. 997

Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 25, # 7 p. 836
Khimiya Geterotsiklicheskikh Soedinenii, , vol. 25, # 7 p. 997