KORDEL, Zdzisław; WAŚKIEWICZ, Jerzy. Characteristics of Polish international freight transport. Transport Economics and Logistics, [S. l.], v. 80, p. 109–118, 2018. DOI: 10.26881/etil.2018.80.12. Disponível em: https://czasopisma.bg.ug.edu.pl/index.php/znetil/article/view/2859. Acesso em: 5 may. 2024.