ROMERO, I.; BENITO, A.; DOMINGUEZ, N.; GARCIA-ESCUDERO, E.; MARTIN, I. Leaf blade and petiole nutritional diagnosis for Vitis vinifera L. cv. Tempranillo by deviation from optimum percentage method. Spanish Journal of Agricultural Research, v. 12, n. 1, p. 206-214, 30 Jan. 2014.