KUKEMELK, Sven. Do regional airlines in Eastern Europe have the right to survive in the European single sky environment?. Aviation, [S. l.], v. 21, n. 4, p. 155–161, 2017. DOI: 10.3846/16487788.2017.1415226. Disponível em: https://journals.vilniustech.lt/index.php/Aviation/article/view/358. Acesso em: 1 jul. 2025.