ZHAO, Tianhao. Assessing the Impact of the COVID-19 Pandemic on the Risk-Return Profile of the U.S. Aviation Sector . Highlights in Business, Economics and Management, [S. l.], v. 28, p. 422–427, 2024. DOI: 10.54097/h9e5sc70. Disponível em: https://drpress.org/ojs/index.php/HBEM/article/view/19738. Acesso em: 9 jul. 2026.