1. Y.T. Tsai: National Yunlin University of Science & Technology (2008), in Chinese.
2. S.C. Yeh: National Cheng Kung University (2005), in Chinese.
3. C.C. Lin: National Cheng Kung University (2006), in Chinese.
4. A. Su: Shu-Te University (2006), in Chinese.
5. Y.H. Wu: National Cheng Kung University (2000), in Chinese.