“Development and Functional Evaluation of a Web-Based Medical Equipment Maintenance Reminder System Integrated With Telegram Notifications”. ENERGY: JURNAL ILMIAH ILMU-ILMU TEKNIK 16, no. 1 (June 27, 2026): 159–168. Accessed June 28, 2026. https://e-journal.upm.ac.id/index.php/energy/article/view/energy.v16i1.16110.