Development of a low-cost NTP stratum 2 time synchronization system with hybrid RTC/NTP failover for remote Indonesian mosques. J. Soft Comput. Explor. [Internet]. 15. studeni 2025. [citirano 25. kolovoz 2026.];6(3):199-205. Dostupno na: https://shmpublisher.com/index.php/joscex/article/view/570