Koussa, T., L. A. Rifai, and M. Cherrad. “Annual Variations of Alpha-Amylase and Invertases Activities in Buds and Internodes of Grapevines and Their Relation With Carbohydrates and Abscisic Acid Contents”. OENO One, Vol. 39, no. 3, Sept. 2005, pp. 129-36, doi:10.20870/oeno-one.2005.39.3.894.