Shah, Syed Imran Hussain, Rab Nawaz, Sajjad Ahmad, and Muhammad Arshad. 2020. “Sustainability Assessment of Modern Urban Transport and Its Role in the Reduction of Greenhouse Gas Emissions: A Case Study of Metro Bus System (MBS), Lahore”. Kuwait Journal of Science 47 (2). https://journals.ku.edu.kw/kjs/index.php/KJS/article/view/5407.