Lusis, V. K.; Mutsenietse, D. Kh.; Dubur, G. Ya.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1986 , vol. 22, # 10 p. 1104 - 1107
Khimiya Geterotsiklicheskikh Soedinenii, 1986 , vol. 22, # 10 p. 1363 - 1366

Lusis, V. K.; Mutsenietse, D. Kh.; Zandersons, A. Z.; Mazheika, I. B.; Dubur, G. Ya.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1984 , vol. 20, # 3 p. 318 - 323
Khimiya Geterotsiklicheskikh Soedinenii, 1984 , vol. 20, # 3 p. 393 - 398