AMJID AHAD, AJAZ AHMAD GANAI, MOHD MUJEEB, and WASEEM AHMAD SIDDIQUI, “DETERMINATION OF FREE RADICAL SCAVENGING ACTIVITY OF OROXYLUM INDICUM AND QUERCUS INFECTORIA BY REVERSED-PHASE HPLC”., ijpbs, vol. 4, no. 1, pp. 397–406, Mar. 2013.