Jreo, Aqeel Mahdi. 2017. “Synthesis of the New 2-[6-Nitro-2-Benzothiazolylazo]-4-Bromo Phenol Organic Reagent for Spectrophotometric Determination of Zinc(II).”. Al-Qadisiyah Journal of Pure Science 18 (2), 204-13. https://journalsc.qu.edu.iq/index.php/JOPS/article/view/417.