Tamkaew, Nattapong, , Apichart Srirattanaarm, , Kriengsak Chang Bang, Bodying Pooprasert, and ทองพิลา กัณจฐาภรณ์. “Air transport technology halted after aviation business crisis following COVID-19”. Journal of Bansomdej Engineering and Industrial Technology 2, no. 1 (June 30, 2021): 122–139. accessed April 20, 2025. https://ph04.tci-thaijo.org/index.php/JEITB/article/view/4786.