Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 23, # 7 p. 751 - 754
Khimiya Geterotsiklicheskikh Soedinenii, , # 7 p. 915 - 918
Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 23, # 7 p. 751 - 754
Khimiya Geterotsiklicheskikh Soedinenii, , # 7 p. 915 - 918
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), , vol. 33, p. 850 - 852
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, , # 4 p. 923 - 926