Đorđević Milutinović, Lena, Dragana Makajić-Nikolić, Slobodan Antić, Marija Živić, and Andrej Lisec. “Control Model for Ground Crew Scheduling Problem at Small Airports: Case of Serbia”. Transport 36, no. 3 (September 14, 2021): 235-245. Accessed October 25, 2021. https://journals.vgtu.lt/index.php/Transport/article/view/15369.