Perwitasari, D.S. (2019) “Struvite Crystallization Control with Addition of Maleic Acid in Liquid Waste as Fertilizer Materials”, Nusantara Science and Technology Proceedings, pp. 249–257. Available at: https://nstproceeding.com/index.php/nuscientech/article/view/108 (Accessed: 13 July 2025).