1. Pobladores del Papaloapan: biografía de una hoya;Aguirre Beltrán,1992
2. What Maya collapse? Terminal Classic variation in the Maya lowlands;Aimers;J. Archaeol. Res.,2007
3. Alexander, R.T., 2012. Maya collapse or resilience? Lessons from the Spanish Conquest and the Caste War of Yucatan. In: Braswell, G.E., (Ed.), The Ancient Maya of Mexico: Reinterpreting the Past of the Northern Maya Lowlands. Equinox Pub., Sheffield [England] and Bristol, CT, pp. 325–346.
4. Collapse, regeneration, and the origins of Tula and the Toltec state;Anderson,2015
5. Migration in archeology: the baby and the bathwater;Anthony;Am. Anthropologist,1990