JAROCKA, M. Competitiveness of road transport companies in light of ecological determinants in Poland. Transport Economics and Logistics, [S. l.], v. 77, p. 51–58, 2018. DOI: 10.26881/etil.2018.77.05. Disponível em: https://czasopisma.bg.ug.edu.pl/index.php/znetil/article/view/2738. Acesso em: 2 dec. 2022.