R. Gil-Muñoz, R. Vila-López, J. I. Fernández-Fernández, and A. Martínez-Cutillas, “Effects of cluster thinning on anthocyanin extractability and chromatic parameters of Syrah and Tempranillo grapes and wines”, OENO One, vol. 43, no. 1, pp. 45–53, Mar. 2009.