Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 18, # 2 p. 134 - 138
Khimiya Geterotsiklicheskikh Soedinenii, , vol. 18, # 2 p. 176 - 180
Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 18, # 2 p. 134 - 138
Khimiya Geterotsiklicheskikh Soedinenii, , vol. 18, # 2 p. 176 - 180