参考文献

Hegde, Vidyadhar Babu; Bis, Scott Jerome; Yap, Maurice Chee Hoong; Perreault, Denise Marie; Tisdell, Francis Eugene; Dintenfass, Leonard Paul; Dripps, James Edwin; Gifford, James Michael; Guenthenspberger, Katherine Anne; Karr, Laura Lee; Schoonover, Joe Raymond Patent: US2003/134748 A1, 2003 ;