Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 23, # 1 p. 15 - 17
Khimiya Geterotsiklicheskikh Soedinenii, , vol. 23, # 1 p. 22 - 24
Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 23, # 1 p. 15 - 17
Khimiya Geterotsiklicheskikh Soedinenii, , vol. 23, # 1 p. 22 - 24