参考文献

Tsunoda, Hidetoshi; Fukuzawa, Nobuyuki; Chiba, Kyoko; Nakao, Toshifumi; Asada, Noriaki; Takebayashi, Nozomi; Kibayashi, Kenji; Migita, Hideyuki; Morikawa, Maki Patent: US2003/109570 A1, 2003 ;