Litvinov, O. V.; Chalaya, S. N.; Kharchenko, V. G.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1991 , vol. 27, # 8 p. 878 - 882
Khimiya Geterotsiklicheskikh Soedinenii, 1991 , # 8 p. 1095 - 1099

Kharchenko, V. G.; Chalaya, S. N.; Kulikova, L. K.; Litvinov, O. V.
Pharmaceutical Chemistry Journal, 1987 , vol. 21, # 7 p. 500 - 503
Khimiko-Farmatsevticheskii Zhurnal, 1987 , vol. 21, # 7 p. 824 - 826

Kharchenko, V. G.; Chalaya, S. N.; Kulikova, L. K.; Litvinov, O. V.
Pharmaceutical Chemistry Journal, 1987 , vol. 21, # 7 p. 500 - 503
Khimiko-Farmatsevticheskii Zhurnal, 1987 , vol. 21, # 7 p. 824 - 826