Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 16, # 11 p. 1122 - 1124
Khimiya Geterotsiklicheskikh Soedinenii, , vol. 16, # 11 p. 1482 - 1484

Parkhomenko, P. I.; Rybakova, M. V.; Bezmenova, T. E.; Zaika, T. D.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1980 , vol. 16, # 11 p. 1122 - 1124
Khimiya Geterotsiklicheskikh Soedinenii, 1980 , vol. 16, # 11 p. 1482 - 1484