Mokhtar M. Mabrouk, Sherin F. Hammad, Fotouh R. Mansour, and Mary A. Michael. “Reversed Phase High Performance Liquid Chromatographic Method for Simultaneous Determination of Phenylephrine Hydrochloride and Ketorolac Tromethamine”. World Journal of Pharmaceutical Sciences, vol. 3, no. 10, Oct. 2015, pp. 2152-9, https://wjpsonline.com/index.php/wjps/article/view/rphplc-method-phenylephrine-ketorolac-tromethamine.