MIHETEC, Tomislav; STEINER, Sanja; ODIĆ, Denis. Utilization of Flexible Airspace Structure in Flight Efficiency Optimization. Promet - Traffic&Transportation, [S. l.], v. 25, n. 2, p. 109–118, 2013. DOI: 10.7307/ptt.v25i2.1292. Disponível em: https://traffic2.fpz.hr/index.php/PROMTT/article/view/2392. Acesso em: 26 aug. 2025.