Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 24, # 9 p. 1012 - 1017
Khimiya Geterotsiklicheskikh Soedinenii, , # 9 p. 1226 - 1231
Wai, Kwok-Fai; Sammes, Michael P.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1991 , # 1 p. 183 - 187