“Spectrophotometric Determination of Micro Amount of palladium(II) Platinum (II)By Using Pyrazolone Azo Resorcinol”. Baghdad Science Journal 8, no. 4 (December 4, 2011): 996–1004. Accessed April 28, 2024. https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/1321.