Safonova,T.S. et al.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1972 , vol. 8, p. 859 - 863
Khimiya Geterotsiklicheskikh Soedinenii, 1972 , vol. 8, # 7 p. 944 - 948

Safonova,T.S. et al.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1972 , vol. 8, p. 859 - 863
Khimiya Geterotsiklicheskikh Soedinenii, 1972 , vol. 8, # 7 p. 944 - 948