Michael; Carlson
Journal of the American Chemical Society, 1935 , vol. 57, p. 165,170
Journal of the American Chemical Society, 1936 , vol. 58, p. 353,362
Kano, Shinzo; Ebata, Tsutomu; Shibuya, Shiroshi
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1980 , p. 2105 - 2111