Struvite Crystallization Control with Addition of Maleic Acid in Liquid Waste as Fertilizer Materials. Nusantara Science and Technology Proceedings, Malang, Indonesia, p. 249–257, 2019. Disponível em: https://nstproceeding.com/index.php/nuscientech/article/view/108. Acesso em: 24 apr. 2025.