1. FAO-FRA, “Global forest resources assessment 2010” (FAO forestry paper 163, FAO, Rome, 2010); www.fao.org/forestry/fra/fra2010/en.
2. FAO-FRA, “On definitions of forest and forest change” (Working paper 33, FAO, Rome, 2000).
3. Difficulties in tracking the long-term global trend in tropical forest area
4. INPE Projeto Prodes ; www.obt.inpe.br/prodes/index.php.
5. GOFC-GOLD, “A sourcebook of methods and procedures for monitoring and reporting anthropogenic greenhouse gas emissions and removals associated with deforestation, gains and losses of carbon stocks in forests remaining forests, and forestation” (GOFC-GOLD Report version COP18-1, GOFC-GOLD Land Cover Project Office, Wageningen University, Netherlands, 2012).