Sobczak, Paweł. “Changes in the Schedule at the Koleje Śląskie Sp. Z o.o. And Their Impact on the Operations of the Carrier and Sustainable Transport in the Silesia Province”. Forum Scientiae Oeconomia 2, no. 4 (December 14, 2014): 77–90. Accessed September 18, 2026. https://ojs.wsb.edu.pl/index.php/fso/article/view/291.