Andreichikov, Yu. S.; Nekrasov, D. D.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1985 , vol. 21, # 2 p. 132 - 134
Khimiya Geterotsiklicheskikh Soedinenii, 1985 , vol. 21, # 2 p. 166 - 169

Andreichikov, Yu. S.; Nekrasov, D. D.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1985 , vol. 21, # 2 p. 132 - 134
Khimiya Geterotsiklicheskikh Soedinenii, 1985 , vol. 21, # 2 p. 166 - 169