Ramirez-Zea, Carla, and David Morales-Hidalgo. “FAO -Voluntary Guidelines on National Forest Monitoring and Its Possible Effect on Measuring, Reporting and Verification for REDD+”. Pesquisa Florestal Brasileira, vol. 37, no. 91, Sept. 2017, pp. 381-9, https://doi.org/10.4336/2017.pfb.37.91.1344.