B. THOLKAPPIYAN, M. GULSHAD, P. B. MAHESWAR, S. PREETHIRMAYEE, and A. CHARLESMARTIN, “ANALYSIS OF RELATED SUBSTANCES BY HIGH PERFORMANCE LIQUID CHROMATOGRAPHY [HPLC] METHOD FOR VALACYCLOVIR HYDROCHLORIDE”, The Bioscan, vol. 5, no. 1, pp. 117–121, Dec. 2009.