1. Algemene Rekenkamer, 2004. Groene stroom. TK 2003–2004, 29 630, Nrs. 1–2. (Court of Audit, 2004. Green Electricity. Report to the House of Representatives).
2. Cogeneration potential in the Colombian palm oil industry: three case studies;Arrieta;Biomass and Bioenergy,2007
3. Audio radio Interview, CORPOICA Director.
4. Global capitalism and commodity chains: looking back, going forward;Bair;Competition and Change,2005
5. Palm oil: the driving force of world oils and fats economy;Basiron;Oil Palm Industry Economic Journal,2004