Ujung, Idris, Nasruddin A. Abdullah, and Suheri. “Heat Transfer Analysis of Deep Coaxial Geothermal Heat Exchangers: Insights Into Heat-Flux Distribution on Borehole Wall”. JURUTERA - Jurnal Umum Teknik Terapan 12, no. 02 (December 30, 2025): 166-172. Accessed November 7, 2026. https://ejurnalunsam.id/index.php/jurutera/article/view/12095.