Kaliński, Janusz. “The Development and Adjustment of Road and Rail Transportation Network in Poland in 1918-2000”. Studia Historiae Oeconomicae 26, no. 1 (June 1, 2006): 35–50. Accessed February 9, 2026. https://pressto.amu.edu.pl/index.php/sho/article/view/43881.