参考文献

Snow, Roger John; Gao, Donghong A.; Goldberg, Daniel R.; Hammach, Abdelhakim; Kuzmich, Daniel; Morwick, Tina Marie; Moss, Neil; Prokopowicz III, Anthony S.; Selliah, Robert D.; Takahashi, Hidenori Patent: US2002/119975 A1, 2002 ; US 20020119975 A1