WINTHER, M. Improving fuel statistics for Danish aviation. Proceedings from the Annual Transport Conference at Aalborg University, [S. l.], v. 8, n. 1, 2001. DOI: 10.5278/ojs.td.v8i1.4721. Disponível em: https://journals.aau.dk/index.php/td/article/view/4721. Acesso em: 2 may. 2024.