Mohammed, Zainab Y., et al. “In Vitro Cytotoxic Study for Partially Purified Resveratrol Extracted from Grape Skin Fruit Vitis Vinifera”. Journal of Biotechnology Research Center, vol. 3, no. 2, June 2009, pp. 40-47, doi:10.24126/jobrc.2009.3.2.66.