Mataka, Shuntaro; Gorohmaru, Hideki; Thiemann, Thies; Sawada, Tsuyoshi; Takahashi, Kazufumi; Tori-i, Akiyoshi
Heterocycles, 1999 , vol. 50, # 2 p. 895 - 902

Daniewski,A.R.; Urbanski,T.
Roczniki Chemii, 1968 , vol. 42, p. 289 - 296

Mataka, Shuntaro; Gorohmaru, Hideki; Thiemann, Thies; Sawada, Tsuyoshi; Takahashi, Kazufumi; Tori-i, Akiyoshi
Heterocycles, 1999 , vol. 50, # 2 p. 895 - 902