Shar, G. A., and G. A. Soomro. “SPECTROPHOTOMETRIC DETERMINATION OF COBALT(II), NICKEL(II) AND COPPER (II) WITH 1-(2 PYRIDYLAZO)-2-NAPHTHOL IN MICELLAR MEDIUM”. The Nucleus 41, no. 1-4 (July 10, 2020): 77–82. Accessed December 4, 2024. http://www.thenucleuspak.org.pk/index.php/Nucleus/article/view/1068.