Tsupak, E. B.; Vikhryanova, I. V.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1984 , vol. 20, # 12 p. 1401
Khimiya Geterotsiklicheskikh Soedinenii, 1984 , # 12 p. 1695
Wharton, Clifford J.; Wrigglesworth, Roger; Rowe, Michael
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1984 , # 1 p. 29 - 39