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Khimiya Geterotsiklicheskikh Soedinenii, 1986 , vol. 22, # 3 p. 308 - 311

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Tanchuk, N. M.; Vartanyan, M. M.; Karzhavina, N. P.; Knyazhanskii, S. Ya.; Runova, E. A.; Karakhanov, E. A.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1986 , vol. 22, # 3 p. 247 - 250
Khimiya Geterotsiklicheskikh Soedinenii, 1986 , vol. 22, # 3 p. 308 - 311