Ermahri, Razdrizal Rizki, Sutopo Sutopo, and Heru Berian Pratama. 2025. “Characterizing the Two-Phase Geothermal System of the Ulumbu Field Through Updated Data and Numerical Reservoir Modeling to Support Capacity Expansion Planning”. ITB Graduate School Conference 5 (1):503-17. https://gcs.itb.ac.id/proceeding-igsc/index.php/igsc/article/view/504.