Khan, Fawad, Awais Khan, Ashfaq Khan, Muhammad Naeem Khan, Muhammad Sadiq, Kareem Akhtar, Shaukat Ali Shah, Feroz Shah, and Jamil Ahmad. “The Role of Earth Cover and Compaction Level on the Natural Gas Leakage Rate from Micro Holes in an Underground Pipeline”. Journal of the Pakistan Institute of Chemical Engineers 45, no. 2 (August 10, 2017). Accessed April 20, 2024. http://piche.org.pk/journal/index.php/jpiche/article/view/349.