Kanna Rao, K.V., and M.N. Reddy. “Spectrophotometric Determination of Dobutamine Hydrochloride in Pharmaceutical Formulations ”. Asian Journal of Chemistry, vol. 13, no. 4, Mar. 2010, pp. 1535-8, https://asianpubs.org/index.php/ajchem/article/view/22837.