Haleh, H. , Ghaffari, A. , Farahpour, P.. "Using the Combined Model of PROMETHEE and Fuzzy Analytic Network Process for Determining Question Weights in Scientific Exams through Data Mining Approach". World Academy of Science, Engineering and Technology, Open Science Index 59, International Journal of Educational and Pedagogical Sciences (2011), 5(11), 1699 - 1703.