参考文献

Chen, Yi; Daniewski, Andrzej Robert; Harris, William; Kabat, Marek Michal; Liu, Emily Aijun; Liu, Jin-Jun; Luk, Kin-Chun; Michoud, Christophe Patent: US2004/38995 A1, 2004 ; Location in patent: Page/Page column 4-6 ; US 20040038995 A1