K. Jawad, Shawket, et al. “Synthesis of New Ligand As Imidazole Derivative 2-[α-Naphthylazo]-4,5-Diphenylimidazole and Its Application about Extraction of Copper (II) and Sliver (I) from Aqueous Solutions”. Journal of Kufa for Chemical Sciences, no. 1, Mar. 2010, https://journal.uokufa.edu.iq/index.php/jkcs/article/view/3362.