Ying-Chyung, F., M. Ghazaly Shaaban, and F. Othman. “Modelling of Chlorine Residual in the Water Distribution Network at Bukit Tunku, Kuala Lumpur”. Malaysian Journal of Science, vol. 23, Dec. 2004, pp. 193-01, https://ejournal.um.edu.my/index.php/MJS/article/view/9305.