Nishibayashi, Yoshiaki; Komatsu, Naoki; Ohe, Kouichi; Uemura, Sakae
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1993 , # 10 p. 1133 - 1138

Chiao, Wen-Bin; Saunders, William H.
Journal of Organic Chemistry, 1980 , vol. 45, # 7 p. 1319 - 1320