参考文献:
Madar, David J. Djuric, Stevan W. Michmerhuizen, Melissa J. Kopecka, Hana A. Li, Xiaofeng Longenecker, Kenton L. Pei, Zhonghua Pireh, Daisy Sham, Hing L. Stewart, Kent D. Szczepankiewicz, Bruce G. Wiedeman, Paul E. Yong, Hong Patent: US2004/259843 A1, 2004