參考文獻:
Zablocki, Jeff Abelman, Matthew Organ, Michael Bilokin, Yaroslav Diamond, Ivan Arolfo, Maria Pia Yao, Lina Fan, Peidong Elzein, Elfatih Kalla, Rao Perry, Thao Kobayshi, Tetsuya Lee, Xiaofen Jiang, Robert Patent: US2008/32995 A1, 2008 Location in patent: Page/Page column 22 US 20080032995 A1