Al'perovich, M. A.; Khesin, V. G.; Raikhina, R. D.; Medvedeva, T. D.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1981 , vol. 17, # 12 p. 1182 - 1187
Khimiya Geterotsiklicheskikh Soedinenii, 1981 , vol. 17, # 12 p. 1620 - 1625

Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 17, # 12 p. 1182 - 1187
Khimiya Geterotsiklicheskikh Soedinenii, , vol. 17, # 12 p. 1620 - 1625

Denes,V.I. et al.
Chemische Berichte, 1964 , vol. 97, p. 1246 - 1251

Al'perovich, M. A.; Khesin, V. G.; Raikhina, R. D.; Medvedeva, T. D.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1981 , vol. 17, # 12 p. 1182 - 1187
Khimiya Geterotsiklicheskikh Soedinenii, 1981 , vol. 17, # 12 p. 1620 - 1625

Al'perovich, M. A.; Khesin, V. G.; Raikhina, R. D.; Medvedeva, T. D.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1981 , vol. 17, # 12 p. 1182 - 1187
Khimiya Geterotsiklicheskikh Soedinenii, 1981 , vol. 17, # 12 p. 1620 - 1625