1. Altman, J. and Finlayson, J. (1993) Aborigines, tourism and sustainable development. Journal of Tourism Studies, 4 (1), 38–50.
2. Barnes, J., Burgess, J. and Pearce, D. (1992) Wildlife tourism, in Economics for the Wilds (eds T.M. Swanson and E.B. Barbier). Earthscan Publications, London, pp.136–51.
3. Blane, J.M. and Jaakson, R. (1994) The impact of ecotourism boats on the St. Lawrence beluga whales. Environmental Conservation, 21 (3), 267–9.
4. Bolton, M. (1994) Ecodevelopment in the crowded tropics: what prospects for conservation? Environmental Conservation, 21 (3), 259–62.
5. Brown, G. and Henry, W. (1993) The viewing value of elephants, in Economics and Ecology: New Frontiers and Sustainable Development (ed. E.B. Barbier). Chapman & Hall, London, pp. 146–55.