HANUŠ, Z.; VITTEK, P. IMPACT OF EU-ETS ON EUROPEAN AIRCRAFT OPERATORS. Perner’s Contacts, [S. l.], v. 6, n. 4, p. 89–94, 2011. Disponível em: https://pernerscontacts.upce.cz/index.php/perner/article/view/901. Acesso em: 4 kvě. 2024.