Prajapati, A., T. R. Bajracharya, N. Bhattarai, and Y. K. Froyen. “Public Bus Accessibility and Its Implications in Energy and Environment: A Case Study of Kathmandu Valley”. Journal of the Institute of Engineering, vol. 15, no. 3, Oct. 2020, pp. 253-60, doi:10.3126/jie.v15i3.32190.