参考文献

OHSHIMA, ETSUO; KAWAKITA, TAKASHI; YANAGAWA, KOJI; IIDA, KYOICHIRO; KOIKE, RIE; NAKASATO, YOSHISUKE; MATSUZAKI, TOHRU; OHMORI, KENJI; SATO, SOICHIRO; ISHII, HIDEE; MANABE, HARUHIKO; ICHIMURA, MICHIO; SUZUKI, FUMIO Patent: US2002/128290 A1, 2002 ;