Javied, S., M. M. Chaudhary, N. Irfan, M. Tufail, N. Siddique, and S. Waheed. “ARSENIC POLLUTION FROM PHOSPHOGYPSUM PRODUCED AT MULTAN, PAKISTAN”. The Nucleus, vol. 46, no. 3, June 2020, pp. 219-24, http://www.thenucleuspak.org.pk/index.php/Nucleus/article/view/949.