Din, Feroz, and Mohammad Rafiq. “Correlation Between Compressive Strength and Tensile Strength/ Index Strength of Some Rocks of North-West Frontier Province (Limestone and Granite)”. Journal of Himalayan Earth Sciences 30, no. 1 (March 31, 1997): 183-190. Accessed January 1, 2025. http://ojs.uop.edu.pk/jhes/article/view/1504.