Tumielewicz, Michał, and Emil Odważny. “Analysis of the Potential Use of Selected Modes of Transport in the Courier Services Sector”. In Towards Sustainable Transport in Logistics and International Trade, edited by Daniel Tokarski, 23–31. Poland: Lodz University Press, 2025. Accessed January 21, 2026. https://www.press.uni.lodz.pl/index.php/wul/catalog/book/1495/chapter/4619.