1. Acevedo, G., Beinroth, F.H., Dubee, B.C., Esnard, A.M., Hernandez, P.J., Liegel, L.H., Lugo-Lopez, M.A., 1992. Organic Carbon Sequestration in the Soils of Puerto Rico: a Case Study of a Tropical Environment. Dayton Publishing Services, Mayagüez, Puerto Rico.
2. Carbon sequestration in tropical agroforestry systems;Albrecht;Agric. Ecosyst. Environ.,2003
3. Above-ground biomass models for coffee bushes (Coffea arabica L.) in Líbano, Tolima, Colombia;Andrade;Agrofor. Syst.,2018
4. Shade-grown coffee in Puerto Rico: opportunities to preserve biodiversity while reinvigorating a struggling agricultural commodity;Borkhataria;Agric. Ecosyst. Environ.,2012
5. Estimating biomass and biomass change of tropical forests: a primer;Brown;FAO For. Pap.,1997