Avivanto A, Triayudi A, Sholihati ID. Operation and Maintenance Operational Management Application for Building Facilities Based on Android: Operation and Maintenance Operational Management Application for Building Facilities Based on Android. Mantik [Internet]. 2020May31 [cited 2026Sep.4];4(1):798-80. Available from: https://www.ejournal.iocscience.org/index.php/mantik/article/view/854