Ramadhany, Dara, Nur Wulandari, and Nurhayati Nurhayati. “Implementation and Evaluation of Preventive Maintenance Strategies for Digital X-Ray and Ultrasonography Systems in a Secondary Healthcare Hospital”. Jurnal Riset Teknik Fisika 1, no. 2 (December 31, 2025): 66–70. Accessed September 22, 2026. https://www.journal.ar-raniry.ac.id/index.php/juritika/article/view/9318.