Glotova, T. E.; Nakhmanovich, A. S.; Romanenko, L. S.; Sigalov, M. V.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1991 , vol. 27, # 7 p. 795 - 798
Khimiya Geterotsiklicheskikh Soedinenii, 1991 , # 7 p. 990 - 994

Glotova, T. E.; Nakhmanovich, A. S.; Romanenko, L. S.; Sigalov, M. V.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1991 , vol. 27, # 7 p. 795 - 798
Khimiya Geterotsiklicheskikh Soedinenii, 1991 , # 7 p. 990 - 994