1. Evolución en el Trópico: Los Amerindios de Costa Rica y Panamá;Barrantes,1993
2. Microevolution in lower Central America: genetic characterization of the Chibcha-speaking groups of Costa Rica and Panama, and consensus taxonomy based on genetic and linguistic affinity;Barrantes;American Journal of Human Genetics,1990
3. A ceramic sequence for the lower Diquís area, Costa Rica;Baudez,1996
4. CalPalyn's instruction file, version 2.1;Bauer,1991
5. Soil catenas, tropical deforestation, and ancient and contemporary soil erosion in the Peten, Guatemala;Beach;Physical Geography,1998