WILCZEK , Ronald. Theory of product policy and practices in airlines. AUTOBUSY – Technika, Eksploatacja, Systemy Transportowe, [S. l.], v. 24, n. 6, p. 425–427, 2019. DOI: 10.24136/atest.2019.186. Disponível em: https://journals.economic-research.pl/atest/article/view/1711. Acesso em: 29 feb. 2024.