Sultan, Muhammad, 		Din, Salah Ud, 		Ahsan, Muhammad, 		Cheema, Shahan, AND 		Asim, Muhammad.
" The empirical study of gradation of crushed sand concrete properties using six sigma DMAIC methodology" <em>Mehran University Research Journal of Engineering and Technology</em> [Online], Volume 42 Number 3 (21 July 2023)