García-Licona, J. B., R. Maldonado-Torres, A. I. Moreno-Calles, M. E. Alvaréz-Sanchéz, J. García-Chávez, and A. Casas Fernandez. “Ethnoagroforestry Management and Soil Fertility in the Semiarid Tehuacán Valley, México”. Ethnobiology and Conservation, vol. 6, June 2017, doi:10.15451/ec2017-06-6.5-1-16.