1. Accommodating ecotourism in multiple use planning of coastal and marine protected areas;Agardy;Ocean Coast Manag.,1993
2. H-index: a review focused in its variants, computation and standardization for different scientific fields;Alonso;J. Informetr.,2009
3. Environmental orientation and ecotourism awareness among pilgrims, adventure tourists, and leisure tourists;Bagri;Tourism Int. Interdiscipl. J.,2009
4. Summary report of the Vth IUCN World Parks Congress: benefits beyond boundaries 8–17 September 2003;Barrios;Sustain. Dev.,2003
5. Principles of ecotourism;Blamey,2001