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Nikolaeva, S. V.; Zorin, V. V.; Zlotskii, S. S.; Rakhmankulov, D. L.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1986 , vol. 22, # 2 p. 210 - 214
Khimiya Geterotsiklicheskikh Soedinenii, 1986 , vol. 22, # 2 p. 259 - 263
