Gao, H.-W., Tao, M., Chen, Y.-S., & Zhang, P.-F. (2010). Primary-Secondary Wavelength Spectrophotometric Determination of Trace Amounts of Cadmium in Wastewater with New Chromogenic Agent m-Nitrobenzenediazoameno azobenzene. Asian Journal of Chemistry, 12(1), 270–276. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/22918