Syed Mansoor Haider, Ezad Hameed, Dr. Ammad Hassan Khan, Dr. Sadia Tabassum, and Dr. Zia-ur-Rehman. “Physical Characterization of Asphalt Due to Weathering Using Scanning Electron Microscope”. International Journal of Advance Engineering and Research Development (IJAERD), vol. 7, no. 2, Feb. 2020, pp. 1-10, https://ijaerd.org/index.php/IJAERD/article/view/4553.