WASET
Tunyasrirut, S. , Suksri, T. , Numsomran, A. , Gulpanich, S. , Tirasesth, K. (2007), 'The Auto-Tuning PID Controller for Interacting Water Level Process', World Academy of Science, Engineering and Technology, Open Science Index 12, International Journal of Electrical and Information Engineering, 1(12), 773 - 777.