Fathar, Imam Rozali, Etty Riani, Nurhasanah Nurhasanah, and Abdillah Munawir. “Utilization of Ozone and Kefir Whey Probiotics As a Green Technology in Coliform Removal in Health Care Facilities Wastewater”. ASTONJADRO 12, no. 3 (October 7, 2023): 799–813. Accessed November 15, 2024. http://150.107.142.43/index.php/ASTONJADRO/article/view/13786.