Zannat, Tasnima, and Mohammad Jamaluddin Ahmed. “Highly Sensitive Spectrophotometric Method for the Determination of Vanadium in Environmental, Biological, Food and Soil Samples Using Orthoaminophenol”. European Journal of Chemistry 6, no. 2 (June 30, 2015): 141–150. Accessed May 3, 2024. https://www.eurjchem.com/index.php/eurjchem/article/view/1193.