Panjaitan, Jose Rizal Luhut Marolop, Lily Montarcih Limantara, Runi Asmaranto, and Dian Sisinggih. “Performance Measurement on the Existing Operation Pattern of the Multi-Purpose Ladongi Reservoir”. Engineering, Technology & Applied Science Research 15, no. 4 (August 2, 2025): 25158–25163. Accessed May 30, 2026. https://mail.etasr.com/index.php/ETASR/article/view/11535.