TUROŃ, Katarzyna, and Grzegorz SIERPIŃSKI. “Selected Solutions of Environmentally- Friendly Urban Transport Systems”. Economic and Environmental Studies 18, no. 4 (48) (November 27, 2020): 1381–1396. Accessed November 4, 2024. https://czasopisma.uni.opole.pl/index.php/ees/article/view/2807.