Kaimowitz, David; Ndoye, Ousseynou; Sunderlin, William D.; Pacheco, Pablo; Erwidodo(Food and Agriculture Organization of the United Nations, Rome, Italy, 1998)
Viana, Virgíllio; Grieg-Gran, Maryanne; Della Mea, Rosana; Ribenboim, Gabriel(International Institute for Environment and Development (IIED), London, 2009)