Simakov, S. V.; Velezheva, V. S.; Kozik, T. A.; Ershova, Yu. A.; Chernov, V. A.; Suvorov, N. N.
Pharmaceutical Chemistry Journal, 1983 , vol. 17, # 10 p. 707 - 712
Khimiko-Farmatsevticheskii Zhurnal, 1983 , vol. 17, # 10 p. 1183 - 1188

Simakov, S. V.; Velezheva, V. S.; Kozik, T. A.; Suvorov, N. N.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1985 , vol. 21, # 1 p. 61 - 65
Khimiya Geterotsiklicheskikh Soedinenii, 1985 , vol. 21, # 1 p. 76 - 81