Çoklar, H., and M. Akbulut. “Effect of Sun, Oven and Freeze-Drying on Anthocyanins, Phenolic Compounds and Antioxidant Activity of Black Grape (Ekşikara) (Vitis Vinifera L.)”. South African Journal of Enology and Viticulture, vol. 38, no. 2, Oct. 2017, pp. 264-72, doi:10.21548/38-2-2127.