CHI, Y.-H. Navigating turbulence — Resilience and strategies of major U.S. airlines in business continuity, operations, and sustainability. International journal of economic perspectives, [S. l.], v. 19, n. 12, p. 110–133, 2025. Disponível em: https://ijeponline.org/index.php/journal/article/view/1118. Acesso em: 5 jun. 2026.