1.
Kruszyński M, Waniewska A. Development and sources of financing of railway transport infrastructure in Poland in the years 1990–2016. ETiL [Internet]. 2018 Dec. 31 [cited 2024 Nov. 25];80:129-37. Available from: https://czasopisma.bg.ug.edu.pl/index.php/znetil/article/view/2861