M. I. U. Khan, S. M. Jahangir, S. R. Karim, and A. N. Anwar, “Comparison between Antioxidant Effect of Vitamin-C Alone and its Combination to Vitamin-E in Long Evans Norwegian Rat”, Bangladesh J Physiol Pharmacol, vol. 23, no. 1, pp. 16–19, Aug. 2010.