A. H. MARKHAND, M. H. AGHEEM, S. A. SHAIKH, Q. D. KHOKHAR, A. G. SAHIT, and M. A. JAMALI. “Mineralogical and Geochemical Investigations of Celestite and Gypsum from GanjoTakkar Area, Hyderabad, Sindh, Pakistan”. Sindh University Research Journal - SURJ (Science Series), Vol. 52, no. 3, Sept. 2020, https://sujo.usindh.edu.pk/index.php/SURJ/article/view/2562.