Acharya, Ramesh, and Nawaraj Bhattarai. “Analysis of Greenhouse Gas Emission From Aircrafts and Ground Service Equipment at Tribhuvan International Airport of Nepal”. Journal of Advanced College of Engineering and Management 6 (July 9, 2021): 111–122. Accessed October 19, 2024. https://nepjol.info/index.php/JACEM/article/view/38344.