Huana, Todsapol, and Apichai Ritvirool. “Integer Linear Programming Models for Preventive Maintenance of Medical Devices: A Case Study”. Engineering and Technology Horizons 43, no. 3 (September 18, 2026): 430308. accessed September 26, 2026. https://ph01.tci-thaijo.org/index.php/lej/article/view/266577.