Celiński, Ireneusz, Stanisław Krawiec, Elżbieta Macioszek, and Grzegorz Sierpiński. “The Analysis of Travellers Behaviour in the Upper Silesian Conurbation”. Archives of Transport 24, no. 4 (December 31, 2012): 441–461. Accessed February 5, 2026. https://archivesoftransport.com/index.php/aot/article/view/465.