1. Achard, F., Eva, H., Glinni, A., Mayaux, P., Richards, T., Stibig, H. (Eds.), 1998. Identification of Deforestation Hot Spot Areas in the Humid Tropics. Trees Publication Series B. Research Report 4. Space Application Institute, Global Vegetation Monitoring Unit, Joint Research Centre, European Commission, Brussels.
2. The Maya forest in Campeche, Mexico;Acopa,1998
3. Huastec Maya Ethnobotany;Alcorn,1984
4. Agro-export production and peasant land access;Barham;Journal of Development Economics,1995
5. Boege, E., Mendoza, R.M., González, R., 1991. Una Estrategia para el Uso Sostenido de los Recursos Naturales de la Reserva de la Biósfera de Calakmul y sus Alrededores, Campeche. La Foresterı́a, la Apicultura y la Agricultura Intensiva como Posibles Alternativas. Internal Report, Pronatura Penı́nsula de Yucatán-World Wildlife Fund, 41pp.