Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 18, # 2 p. 144 - 147
Khimiya Geterotsiklicheskikh Soedinenii, , vol. 18, # 2 p. 188 - 192
Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 18, # 2 p. 144 - 147
Khimiya Geterotsiklicheskikh Soedinenii, , vol. 18, # 2 p. 188 - 192