Prastyo, D. D., Akbar, M. S. and Otok, B. W. (2008) “FUZZY MODELING APPROACH AND GLOBAL OPTIMIZATION FOR DUAL RESPONSE SURFACE”, Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri, 9(2), pp. 102-111. doi: 10.9744/jti.9.2.102-111.