“Spectrophotometric and Fluorometric Studies of Cobalt(II), Zinc(II), Nickel(II), Iron(II) and Copper(II) of Pyruvic Acid 4-Phenyl-3-Thiosemicarbazone ”. Sindh University Research Journal - SURJ (Science Series), vol. 50, no. 2, May 2020, https://sujo.usindh.edu.pk/index.php/SURJ/article/view/1377.