Mohd Salleh, N., S. Ismail, and M. N. Mohamad Ibrahim. “RADICAL SCAVENGING ACTIVITY OF LIGNIN EXTRACTED FROM OIL PALM EMPTY FRUIT BUNCH AND ITS EFFECT ON GLUTATHIONE-S-TRANSFERASE ENZYMES ACTIVITY”. Asian Journal of Pharmaceutical and Clinical Research, vol. 8, no. 3, May 2015, pp. 81-87, https://journals.innovareacademics.in/index.php/ajpcr/article/view/3622.