Li, Mei, Ming-Liang Ye, and Hong-Wen Gao. 2010. “Study on Cadmium Complex Reaction With P-Acetyl Benzenediazo- Aminoazobenze and Determination of Trace Amounts of Cadmium by Β-Correction Spectrophotometry ”. Asian Journal of Chemistry 14 (2):811-20. https://asianpubs.org/index.php/ajchem/article/view/22157.