Nyiondi-Bonguen, E.; Fondjo, E. Sopbue; Fomum, Z. Tanee; Doepp, Dietrich
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1994 , # 15 p. 2191 - 2196
Barnish, Ian T.; Fung, Shing C.; Gibson, Martin S.; Khan, Saeed R.; Pawalchak, Gordon A.; Tse, Kin M.
Journal of Heterocyclic Chemistry, 1986 , vol. 23, p. 417 - 419
Patel, Dalpat I.; Smalley, Robert K.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1984 , # 11 p. 2587 - 2590