1. Allison P. D., (1995). Survival Analysis Using the SAS System SAS Institute Cary, NC
2. Barbieri, A. F. (2005). People, Land, and Context: Multi-scale Dimensions of Population Mobility in the Ecuadorian Amazon. Ph.D. Dissertation, Department of City and Regional Planning. Chapel Hill: University of North Carolina. 204 pp
3. Barbieri A. F., Bilsborrow R. E., Mena C. F., Pan W., Torres B., (2003). Changes in Land Cover and Land Use Over Time in the Ecuadorian Amazon 99th Meeting of the Association of American Geographers New Orleans
4. Barbieri A. F., Carr D. L., (2005). Gender-specific out-migration, deforestation and urbanization in the Ecuadorian Amazon Global and Planetary Change 47(2–4):99–110
5. Bilsborrow R. E., (1987). Population pressures and Agricultural Development in Development Countries: a conceptual framework and recent evidence World Development 15(2): 183–203