1. Abrahamson W.J., Layne J.N., Long term patterns of acorn production for five oak species in xeric Florida uplands, Ecology 84 (2003) 2476–2492.
2. Alejano R., Alaejos J., Torres E., Pruning quantification and biomass production in two holm oak dehesas of South West Spain, in: Proceedings of the 10th International Conference on Mediterranean climate ecosystems, Millpress, Rotterdam, 2004.
3. Álvarez S., Morales R., Bejarano L., Durán A., Producción de bellota en la dehesa salmantina. XLII Reunión Científica de la Sociedad Española para el Estudio de los Pastos, 2002, 645–649.
4. Barceló-Coll J., Nicolás-Rodrigo G., Sabater-García B., Sánchez-Tomás R., Fisiología Vegetal, Pirámide edition, 2001, Madrid, Spain, 566 p.
5. Cañellas I., Montero G., The influence of cork oak pruning on the yield and growth of cork, Ann. For. Sci. 59 (2002) 753–760.