Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 20, # 6 p. 672 - 675
Khimiya Geterotsiklicheskikh Soedinenii, , vol. 20, # 6 p. 823 - 826

Groszkowski, S.; Krezhel, I.; Kozycka, L.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1984 , vol. 20, # 6 p. 672 - 675
Khimiya Geterotsiklicheskikh Soedinenii, 1984 , vol. 20, # 6 p. 823 - 826