Karatsu, Takashi; Hiresaki, Tatsuro; Arai, Tatsuo; Sakuragi, Hirochika; Tokumaru, Katsumi; Wirz, Jakob
Bulletin of the Chemical Society of Japan, 1991 , vol. 64, # 11 p. 3355 - 3362

Hoechst Aktiengesellschaft
Patent: US5684185 A1, 1997 ;