Kartelj, Aleksandar, Vladimir Filipović, and Jozef Kratica. “ Integer Programming Model for Distance-Edge-Monitoring Problem”. Yugoslav Journal of Operations Research 35, no. 2 (May 12, 2024): 383–392. Accessed July 28, 2025. https://yujor.erc.fon.bg.ac.rs/index.php/yujor/article/view/846.