Ali , F. ., Z. . Shiqi, R. . Ahmad, B. Ali, and H. Iqbal. “Palynostratigraphical and Oceanic Anoxic Events Investigation in the Lower Jurassic Black Shale, Indus Basin, Pakistan”. Journal of Himalayan Earth Sciences, vol. 56, no. 2, Nov. 2023, pp. 73-88, http://ojs.uop.edu.pk/jhes/article/view/1242.