Sohail, G. M.- ud-D., N. Aadil, A. Ismail, and A. A. Bhatti. “Estimation of Engineering Properties of Khewra Sandstone Utilizing Wire-Line Logs and Seismic Data of Fortabbas-1 and Bijnot-1 Wells, Punjab Platform Pakistan”. Journal of the Pakistan Institute of Chemical Engineers, vol. 42, no. 2, Dec. 2014, pp. 107-12, http://piche.org.pk/journal/index.php/jpiche/article/view/134.