Gonçalves, Fernando Jorge, and António Manuel Jordão. “Influence of Different Commercial Fining Agents on Proanthocyanidin Fraction and Antioxidant Activity of a Red Wine from Baga Grapes”. OENO One, vol. 43, no. 2, June 2009, pp. 111-20, doi:10.20870/oeno-one.2009.43.2.802.