Cordova, Hendra, and Andry Fitra Wijaya. “Self-Tuning Pid Neural Network Controller to Control Nonlinear Ph Neutralization in Waste Water Treatment”. IPTEK The Journal for Technology and Science, vol. 18, no. 3, June 2025, pp. 89-95, https://journal.its.ac.id/index.php/jts/article/view/5929.