1. Mpezamihigo, M. (2004).The Use of Photoselective Plastic Films to Control Growth and Cropping of Three Raspberry (Rubus idaeus) Cultivars, ‘Autumn Bliss’, ‘Glen Ample’, and ‘Joan Squire’.Ph.D. Thesis. University of Reading, Reading, UK. 171 pp.
2. Nordic Committee on Food Analysis (1993).Fructose, Glucose and Saccharose. Liquid Chromatographic Determination in Fruit and Vegetable Products.Method 148. Nordic Committe on Food Analysis, Oslo, Norway. 4 pp.
3. Takahashi, N., Phinney, B. O. and MacMillan, J. (1990).Gibberellins.Springer-Verlag, Berlin, Germany. 426 pp.