Morteza Bahram, M. B. “Cloud-Point Extraction and Selective Spectrophotometric Determination of Pb(II) and Cu(II) Using Synthesized N1,N2-Diphenylhydrazine-1,2-Dicarbothioamide and an Anionic Surfactant”. 2013. Jordan Journal of Chemistry (JJC), vol. 8, no. 1, Nov. 2021, pp. 45-55, https://jjc.yu.edu.jo/index.php/jjc/article/view/191.