Egi, Masahiro; Kawai, Takuya; Umemura, Megumi; Akai, Shuji
Journal of Organic Chemistry, 2012 , vol. 77, # 16 p. 7092 - 7097

Armesto, Diego; Horspool, William M.; Mancheno, Maria J.; Ortiz, Maria J.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1992 , # 18 p. 2325 - 2330

Cheminat,B.
Bulletin de la Societe Chimique de France, 1972 , p. 3415 - 3421