Radmilović, Zoran, Vladislav Maraš, and Saša Jovanović. “Ship Lock As General Queuing System With Batch Arrivals and Batch Service”. Promet - Traffic&Transportation 19, no. 6 (November 25, 2007): 343–352. Accessed August 27, 2025. https://traffic2.fpz.hr/index.php/PROMTT/article/view/2242.