Dozorova, E. N.; Grizik, S. I.; Granik, V. G.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1990 , vol. 26, # 1 p. 70 - 73
Khimiya Geterotsiklicheskikh Soedinenii, 1990 , # 1 p. 81 - 84

Dozorova, E. N.; Grizik, S. I.; Granik, V. G.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1990 , vol. 26, # 1 p. 70 - 73
Khimiya Geterotsiklicheskikh Soedinenii, 1990 , # 1 p. 81 - 84