参考文献

Ozaki, Fumihiro; Kaneko, Toshihiko; Tabata, Mutsuko; Takahashi, Yoshinori; Miyazaki, Kazuki; Kamata, Junichi; Yoshida, Ichiro; Matsukura, Masayuki; Suzuki, Hiroyuki; Yoshinaga, Takashi; Ishihara, Hiroki; Katoh, Hiroshi; Sawada, Kohei; Onogi, Tatsuhiro; Kobayashi, Kiyoaki; Ohkubo, Miyuki Patent: US2003/220368 A1, 2003 ; Location in patent: Page/Page column 30 ;