Viana, Virgíllio; Grieg-Gran, Maryanne; Della Mea, Rosana; Ribenboim, Gabriel(International Institute for Environment and Development (IIED), London, 2009)
Sheil, Douglas; Casson, Anne; Meijaard, Erik; van Noordwijk, Meine; Gaskell, Joanne; Sunderland-Groves, Jacqui; Wertz, Karah; Kanninen, Markku(Center for International Forestry Research (CIFOR), Bogor, Indonesia, 2009)