Colchester, Marcus; Apte, Tejaswini; Laforge, Michel; Mandondo, Alois; Pathak, Neema(Center for International Forestry Research (CIFOR), Bogor, Indonesia, 2003)
Schmithusen, Franz; Bisang, Kurt; Zimmermann, Willi(Policy and Institutions Branch, Policy and Planning Division, Food and Agriculture Organization of the United Nations, 2001)