Vainilavichyus, P. I.; Syadyaryavichyute, V. Yu.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1987 , vol. 23, # 12 p. 1332 - 1335
Khimiya Geterotsiklicheskikh Soedinenii, 1987 , # 12 p. 1655 - 1658

Vainilavichyus, P. I.; Syadyaryavichyute, V. Yu.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1987 , vol. 23, # 11 p. 1216 - 1218
Khimiya Geterotsiklicheskikh Soedinenii, 1987 , # 11 p. 1520 - 1522