1. Adisoemarto, S. (Ed.). 1989. Proceedings of Regional Workshop on Ecodevelopment Process for Degraded Land Resources in Southeast Asia. Indonesian MAB National Committee and UNESCO Regional Office for Science and Technology for Southeast Asia, Jakarta.
2. Ewel, J. J. 1987. Restoration is the ultimate test of ecological theory. In: Jordan III, W. R., Gilpin, M. E. & Aber J. D. (Eds.), Restoration Ecology: A Synthetic Approach to Ecological Research, pp. 31–33. Cambridge University Press, Cambridge.
3. FAO. 1990. Interim Report on Forest Resources Assessment 1990 Project. Document COFO-90/8(a), prepared for the tenth session of the FAO Committee on Forestry. Rome, 24–28 September 1990. FAO, Rome.
4. Hadley, M. & Schreckenberg, K. 1989. Contributing to sustained resource use in the humid and sub-humid tropics: Some research approaches and insights. MAB Digest 3. UNESCO, Paris.
5. ITTO. 1990. ITTO Guidelines for the Sustainable Management of Natural Tropical Forests. ITTO Technical Series 5. ITTO, Yokohama.