Koty, Afraim, Mukul Sharma, Bindu Khare, and Ashutosh Srivastava. “Spectrophotometric Determination of Penicillamine With 2,6-Dichlorophenolindophenol in Drug Formulations”. Asian Journal of Chemistry 20, no. 6 (March 30, 2010): 4239–4248. Accessed November 29, 2024. https://asianpubs.org/index.php/ajchem/article/view/19013.