Kannappan, N., K. Kannan, and R. Manavalan. “Simultaneous Spectrophotometric Estimation of Amlodipine and Enalapril in Tablets Using Orthogonal Polynomial Function Method”. Asian Journal of Chemistry 18, no. 4 (March 30, 2010): 2890–2894. Accessed July 23, 2024. https://asianpubs.org/index.php/ajchem/article/view/20704.