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Chemistry of Heterocyclic Compounds (New York, NY, United States), 1983 , vol. 19, # 11 p. 1248
Khimiya Geterotsiklicheskikh Soedinenii, 1983 , # 11 p. 1565
Marshtupa, V. P.; Kirilash, A. R.; Tikhonova, G. A.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1984 , vol. 20, # 2 p. 228
Khimiya Geterotsiklicheskikh Soedinenii, 1984 , vol. 20, # 2 p. 269 - 270
