1. Alonso, A. and Grigg, A. 2002. From implementation to communication: Towards sustainability reporting in the travel and tourism sector. Paper presented at the Tourism and Natural Environment Symposium. 2002. University of Brighton.
2. Berkes, F. 1998. Dialogues of the commons: Emerging directions for jointly used natural resources. Presidential Address at the 7th Conference of the International Association for the Study of Common Property. 1998, Vancouver.
3. Sustainable tourism and the question of the commons