Shishkin, G. V.; Sil'nikov, V. N.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1986 , vol. 22, # 12 p. 1342 - 1345
Khimiya Geterotsiklicheskikh Soedinenii, 1986 , vol. 22, # 12 p. 1658 - 1661

Shishkin, G. V.; Sil'nikov, V. N. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1986 ,  vol. 22,  # 12  p. 1342 - 1345Khimiya Geterotsiklicheskikh Soedinenii, 1986 ,  vol. 22,  # 12  p. 1658 - 1661