Filimonov, V.D.; Gorbachev, S.G.; Sirotkina, E.E.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1980 , vol. 16, # 3 p. 252 - 255
Khimiya Geterotsiklicheskikh Soedinenii, 1980 , vol. 16, # 3 p. 340 - 343

Filimonov, V. D.; Rodionov, V. A.; Anfinogenov, V. A.; Sirotkina, E. E.
Journal of Organic Chemistry USSR (English Translation), 1985 , p. 1144 - 1148
Zhurnal Organicheskoi Khimii, 1985 , vol. 21, # 6 p. 1256 - 1261