PISAREK, R. Air transport liberalisation in the European Union and its impact on development of the civil aviation sector in Poland. Comparative Economic Research. Central and Eastern Europe, [S. l.], v. 12, n. 3, p. 45–58, 2010. DOI: 10.2478/v10103-009-0011-x. Disponível em: https://czasopisma.uni.lodz.pl/CER/article/view/7784. Acesso em: 1 maj. 2024.