Stetter,H. et al.
Chemische Berichte, 1977 , vol. 110, p. 1007 - 1019

Ryu, Ilhyong; Ryang, Membo; Rhee, Ilsong; Omura, Haruo; Murai, Shinji; Sonoda, Noboru
Synthetic Communications, 1984 , vol. 14, # 12 p. 1175 - 1180