Wenlung Chang, Wongchai Anupong, Bowen Long, Yichia Lin,. “The Performance Analysis of Beibu Gulf Airlines Based on DEA Model During the Pre-COVID-19 Pandemic Period”. CONVERTER (July 29, 2021): 230-235. Accessed June 7, 2026. http://www.converter-magazine.info/index.php/converter/article/view/284.