Nayaju, Susan, Prashant Lakhemaru, Khem Narayan Poudyal, and Nawraj Bhattarai. “Study of Carbon Emission by Vehicles and Its Impact on Environment and Climate on BP Highway”. Journal of the Institute of Engineering 18, no. 1 (March 7, 2025): 25-31. Accessed March 10, 2025. https://tuta.pcampus.edu.np/journal/index.php/jie/article/view/fulltext-180104.