参考文献

Dong, Han-Qing; Foreman, Kenneth; Li, An-Hu; Mulvihill, Mark Joseph; Panicker, Bijoy; Steinig, Arno G.; Stolz, Kathryn M.; Weng, Qinghua; Jin, Meizhong; Volk, Brian; Wang, Jing; Wang, Ti; Beard, James D. Patent: US2007/129364 A1, 2007 ; Location in patent: Page/Page column 81 ; US 20070129364 A1