Kozłowska, Małgorzata. “Demand for Coach and Bus Transport Market in the European Union”. AUTOBUSY – Technika, Eksploatacja, Systemy Transportowe 18, no. 1-2 (February 28, 2017): 40–46. Accessed May 18, 2024. https://journals.economic-research.pl/atest/article/view/649.