Joshi, Smita, et al. “Static Bioassay and Toxicity of Azo Dye Stuff to the Air Breathing Fish Heteropneustes Fossilis and Its Possible Rectification”. Asian Journal of Chemistry, vol. 13, no. 2, Mar. 2010, pp. 439-43, https://asianpubs.org/index.php/ajchem/article/view/22606.