Okamoto, Tsuyoshi; Kakinami, Takaaki; Fujimoto, Hiroshi; Kajigaeshi, Shoji
Bulletin of the Chemical Society of Japan, 1991 , vol. 64, # 8 p. 2566 - 2568
Meth-Cohn, Otto; Vuuren, Gerda van
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1986 , p. 233 - 244