Kalcheva, V. B.; Peshakova, L. S.; Simov, D. A.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1984 , vol. 20, # 11 p. 1210 - 1213
Khimiya Geterotsiklicheskikh Soedinenii, 1984 , # 11 p. 1467 - 1471

Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 20, # 11 p. 1210 - 1213
Khimiya Geterotsiklicheskikh Soedinenii, , # 11 p. 1467 - 1471