U. Satyanarayana, Reddy, P.R. , Reddy, K.K. and Krishna, K.R. 2014. A Simple, Sensitive, Specific Reversed-Phase Ultra Performance Liquid Chromatographic UV Method For Estimation Of Paratoluenesulfonic Acid In Valacyclovir Hydrochloride Sample. Caribbean Journal of Sciences and Technology . 2, 01 (Jan. 2014), 642–648.