SUBBAYAMMA, A.V., and C. RAMBABU. “Spectrophotometric Determination of Oxidative Coupling Reactions of Nebivolol and Trandolapril”. Asian Journal of Chemistry, vol. 21, no. 6, Mar. 2010, pp. 4280-4, https://asianpubs.org/index.php/ajchem/article/view/18161.