“Karakteristik Perpindahan Panas Pada Pipa Penukar Kalor Selongsong Aliran Searah Vertikal”. Journal of Chemical Process Engineering 1, no. 2 (November 30, 2016): 30–35. Accessed August 26, 2025. https://jurnal.fti.umi.ac.id/index.php/JCPE/article/view/806.