Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 28, # 9 p. 1004 - 1005
Khimiya Geterotsiklicheskikh Soedinenii, , # 9 p. 1191 - 1192
Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 28, # 9 p. 1004 - 1005
Khimiya Geterotsiklicheskikh Soedinenii, , # 9 p. 1191 - 1192