1. Statistics, Taipei;Chiang,2001
2. Chen FS, You ML, Chang TC, Wen KL. Achievements of students’ learning via GM(1,N) model. In: 5th UICEE annual conference on engineering education, 2002; p. 127–9.
3. Huang YF, Wang LK, Wen KL. GM(1,1) toolbox for engineering. In: 8th National conference of grey theory & applications, 2003, C017.
4. Wen KL, Huang YF, You ML. Grey entropy toolbox in weighting analysis. In: 8th National conference of grey theory & applications, 2003, C056.
5. Wnag CW, Yeh, CK, Wen KL, Jwo WS. The development of completed grey relational grade toolbox via Matlab. In: 2006 IEEE conference on cybernetics and intelligent systems, June 2006, p. 428–33.