参考文献

Pandey, Anjali; Scarborough, Robert M; Matsuno, Kenji; Ichimura, Michio; Nomoto, Yuji; Ide, Shinichi; Tsukuda, Eiji; Sasaki, Junko; Oda, Shoji Patent: US2004/259881 A1, 2004 ; US 20040259881 A1