Wisjnuprapto, W., Saipanich, S., Capdeville, B. and Roques, H. (2019) “Nitrification in the Contact-Stabilization Process”, Journal of Mathematical and Fundamental Sciences, 15(2), pp. 17-33. Available at: https://journals.itb.ac.id/index.php/jmfs/article/view/9555 (Accessed: 1November2025).