Burdzik, Rafał, Maria Cieśla, and Aleksander Sładkowski. “Cargo Loading and Unloading Efficiency Analysis in Multimodal Transport”. Promet - Traffic&Transportation 26, no. 4 (August 7, 2014): 323–331. Accessed August 27, 2025. https://traffic2.fpz.hr/index.php/PROMTT/article/view/2478.