Chaves, R.M., Ten-Caten, A., Pinheiro, H.A., Ribeiro, A. and Damatta, F.M. (2008) Seasonal changes in photoprotective mechanisms of leaves from shaded and unshaded field-grown coffee (Coffea arabica L.) trees. Trees, 22, 351-361.
 Cannell, M.G.R. (1971) Production and distribution of dry matter in trees of Coffea arabica L. in Kenya as affected by seasonal climatic differences and the presence of fruits. Annn.appl. Biol., 67, 99-120.
 Bellachew, B. and Sacko, J.C. (2009) Coffee genetic resources under severe threat from genetic erosion in the centres of origin and diversity: an urgent need for conservation measures. Proceedings of the 22nd International Conference on Coffee Science (ASIC), September 14-19, 2008, Campinas, SP-Brazil, 1487-1496.
 Taye, K. (2010) Environmental sustainability and coffee diversity in Africa. Paper presented in International Coffee Organization (ICO) World Coffee Conference, 26-28 February 2010, Guatemala City. Available online at ttp://dev.ico.org/event_pdfs/wcc2010/ presentations//wcc2010-kufa.pdf.
 Taye, K. (2006) Ecophysiological diversity of wild Arabica populations in Ethiopia: Growth, water relations and hydraulic characteristics along a climatic gradient. Ph.D. thesis, Ecology and Development Series, NO 46, Cuvillier Verlag, Gottingen.
 Taye, K., Mesfin, A. and Paulos, D. (2004) Dry matter production and distribution in Arabica coffee seedlings as affected by media components. In: Asfaw, Z., Getachew, B., Belay, S., Bulcha, W. and Nigussie, A. (eds.) Proceedings of the Tenth Crop Science Society of Ethiopia (CSSE), SEBIL, 10, 154-164.
 DaMatta, F.M., Loos, R.A., Silva, E.A. and Loureiro, M.E. (2002) Limitations to photosynthesis in Coffea canephora as a result of nitrogen and water availability. Journal of Plant Physiology, 9, 975-981.
 Yacob, E., Tesfaye, S., Taye, K., Alemseged, Y., Takele, N., Anteneh, N. and Bekele, B. (1996) Advances in coffee agronomy research in Ethiopia. In: Tenywa, J.S., Adipala Ekwamu, M.W. Ogengalatogo (eds). Proceedings of Inter-Africa Coffee Organization (IACO) Workshop, 4-6 Sept., 1995, Kampala, Uganda, 40-45.
 Burkhardt, J., Kufa, T, Beining, A, Goldbach, H. and Fetene, M. (2007) Different drought adaptation strategies of Coffea arabica populations along rainfall gradient in Ethiopia. Proceedings of the 21st International Conference on Coffee Science Colloquium (ASIC), 11-15 September 2006, Montpellier, France, 1032-1036.
 Taye, K. and Burkhardt, J. (2008) Ecophysiology of wild Coffea arabica populations in the montane rainforests of Ethiopia. Proceedings of a National Workshop, Four Decades of Coffee Research and Development in Ethiopia, 14-17 August 2007, Addis Ababa (Ghion Hotel), EIAR, Ethiopia, 140-149.
 Gathaara, M.P.H., Muthur, F.M. and Cheruiyot, R.C. (1997) Biomass accumulation in the various plant organs of coffee Arabica L., cultivar Ruiru 11, under drip irrigation in Kenya, ASIC 17th Colloquium, Nairobi, 752-759.
 Kufa, T. and Burkhardt, J. (2009) Morpho-agronomic characterization of seedlings of wild Coffea arabica accessions under controlled conditions in southwestern Ethiopia. Proceedings of the 22nd International Conference on Coffee Science (ASIC), September 14-19, 2008, Campinas, SP-Brazil, 1552-1562.