Andjelkovic, M., B. Radovanović, A. Radovanović, and A. Andjelkovic. “Changes in Polyphenolic Content and Antioxidant Activity of Grapes Cv Vranac During Ripening”. South African Journal of Enology and Viticulture, vol. 34, no. 2, Nov. 2016, pp. 147-55, doi:10.21548/34-2-1090.