%I Peter Lang %P 13-46 %T The European transport system : major challenges %B Liberalization of Transportation Services in the EU: the Polish Perspective %E Andrzej Cie?lik %E Jan Jakub Micha?ek %S Polish Studies in Economics %D 2015 %A Jan Michalek %A Mahdi Ghodsi %A Armando Rungi %N 6 %L eprints2750