Patel, M., A. K. Parashar, M. Tiwari, A. J. Majumdar, and R. K. Nema. “Simultaneous Estimation of Phenylephrine Hydrochloride and Benzyl Alcohol by First Derivative Spectrophotometric Method”. Current Research in Pharmaceutical Sciences, Vol. 2, no. 4, Dec. 2012, pp. 215-8, https://crpsonline.com/index.php/crps/article/view/83.