Koussa, T., Rifai, L. A. and Cherrad, M. (2005) “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, 39(3), pp. 129-136. doi: 10.20870/oeno-one.2005.39.3.894.