1. University of Costa Rica, Costa Rica Agnello R, Han Y (1992) Substitution effects within a multiple site travel cost model with application to recreational fishing;M Adamson-Badilla;Eastern Economics Association Meetings Alberini A,1998
2. Willingness to pay for environmental preservation by ecotourism-linked businesses: evidence from the Caribbean Windward Islands;R Allport;Faculty Series,2003
3. Analyse du comportement face � un risque sanitaire: cas de la consommation non-marchande de coquillages;G App�r�;Revue d'Economie Politique,2003
4. Divers'willingness to pay to visit marine sanctuaries: an exploratory study;T Arin;Ocean & Coastal Management,2002