Guzmán, Ricardo Andrés (2007): Many hands make hard work, or why agriculture is not a puzzle. Unpublished.
Guzmán, Ricardo Andrés and Weisdorf, Jacob Louis (2009): Product variety and the second demographic transition. Unpublished.
Rowthorn, Robert; Guzmán, Ricardo Andrés and Rodríguez-Sickert, Carlos (2008): The economics of early social stratification. Unpublished.
Rowthorn, Robert; Guzmán, Ricardo Andrés and Rodríguez-Sickert, Carlos (2011): The economics of social stratification in premodern societies. Unpublished.
Guzmán, Ricardo Andrés (2008): The Neolithic Revolution from a price-theoretic perspective. Unpublished.
Guzmán, Ricardo Andrés and Weisdorf, Jacob (2009): The Neolithic Revolution from a price-theoretic perspective. Unpublished.
Rowthorn, Robert E.; Guzmán, Ricardo Andrés and Rodríguez-Sickert, Carlos (2009): Theories of the evolution of cooperative behaviour: A critical survey plus some new results. Unpublished.
Guzmán, Ricardo Andrés; Rodríguez-Sickert, Carlos and Rowthorn, Robert (2006): When in Rome, do as the Romans do: the coevolution of altruistic punishment, conformist learning, and cooperation. Published in: Evolution and Human Behavior , Vol. 28, No. 2 (March 2007): pp. 112-117.
