Yakura, Takayuki; Tanaka, Takeshi; Ikeda, Masazumi; Uenishi, Jun'ichi
Chemical and Pharmaceutical Bulletin, 2003 , vol. 51, # 4 p. 471 - 473

Groger; Syring; Johne
Pharmazie, 1975 , vol. 30, # 7 p. 440 - 443