参考文献
Tobe, Takahiko; Sugane, Takashi; Hamaguchi, Wataru; Shimada, Itsuro; Maeno, Kyoichi; Miyata, Junji; Kimizuka, Tetsuya; Suzuki, Takeshi; Kohara, Atsuyuki; Morita, Takuma; Arlt, Michael; Greiner, Hartmut
Patent: US2003/216385 A1, 2003 ;
US 20030216385 A1