1. ABELES, F. B. 1969. Abscission: Role of cellulase. Plant Physiol. 44: 447-452.
2. BAIN, J. M. 1958. Morphological, anatomical, and physiological changes in the developing fruit of the Valencia orange, Citrus sinensis (L). Osbeck. Aust. J. Bot. 6: 1-24.
3. COGGINS, C. W. Jr., and H.Z. HIELD. 1968. Plant-growth regulators. In: REUTHER, W. (ed.). The citrus industry pp. 371-384. Univ. California Press.