1. Grazing effects on species composition in different vegetation types (La Palma, Canary Islands);Arévalo;Acta Oecologica,2011
2. Bermejo, L. A. (2003). Conservación de los recursos genéticos caprinos en los espacios protegidos de Canarias: Impacto social y ambiental (PhD thesis). Universidad de Córdoba, Spain.
3. You can’t go home. Pastoralism in the new millennium;Blench,2001
4. Measurements for terrestrial vegetation;Bonham,1980
5. Soil survey field and laboratory methods manual. Soil Survey Investigations Report No. 51;Burt,2009