Mr.Y.Dharshan., Dr.K.Srinivasan, Dr.B.Sharmila., R.Shanmugapriya. “Analysis Of Ph Neutralization Using Various Controllers”. International Journal of Advanced Science and Technology, Vol. 29, no. 9s, June 2020, pp. 6709 -20, http://sersc.org/journals/index.php/IJAST/article/view/20419.