Tan Tien, N., K. Hak Kyeong, and K. Sang Bong. “CONTROL OF FERMENTATION PROCESS IN STIRRED TANK BIOREACTOR”. Science and Technology Development Journal, Vol. 4, no. 8&9, Sept. 2001, pp. 87-96, doi:https://doi.org/10.32508/stdj.v4i8&9.3519.