WARSEWICZ, Czesław. Developing the Logistics Operator Function in PKP CARGO Group Strategy. Transport Economics and Logistics, [S. l.], v. 82, p. 29–42, 2019. DOI: 10.26881/etil.2019.82.03. Disponível em: https://czasopisma.bg.ug.edu.pl/index.php/znetil/article/view/5365. Acesso em: 5 may. 2024.