Estu, Larap K., Betty Susanti, and Febrian Hadinata. 2021. “Operation and Maintenance Financial Feasibility Analysis of Centralized Domestic Wastewater Treatment System (case Study: Palembang City Sewerage Project)”. Scientific Review Engineering and Environmental Sciences (SREES) 30 (3):477-84. https://doi.org/10.22630/PNIKS.2021.30.3.40.