Avivanto, Ahmad, Agung Triayudi, and Ira Diana Sholihati. “Operation and Maintenance Operational Management Application for Building Facilities Based on Android: Operation and Maintenance Operational Management Application for Building Facilities Based on Android”. Jurnal Mantik 4, no. 1 (May 31, 2020): 798-808. Accessed September 3, 2026. https://www.ejournal.iocscience.org/index.php/mantik/article/view/854.