1. A/S, C. Feasibility study on options to step up EU action against deforestation. Retrieved from internal-pdf://0917462990/COWI 2018 Feasibility study.pdf (2018).
2. Alliance R., & UTZ. (n.d.). Programme De Certification Rainforest Alliance 2020. Rainforest Alliance Pour Les Entreprises. Retrieved from https://www.rainforestalliance.org/business/fr/solutions/certification/agriculture/2020-certificationprogram/
3. ANRPC. (n.d.). The Association of Natural Rubber Producing Countries (ANRPC). Retrieved from http://www.anrpc.org/
4. Au Gabon, une plantation géante d’hévéas dérange. Sciences et Avenir. (2015). [Retrieved] from https://www.sciencesetavenir.fr/nature-environnement/au-gabon-une-plantation-geante-d-heveas-derange_16010
5. Barlow C. The natural rubber industry, its development, technology, and economy in Malaysia. Kuala Lumpur; New York: Oxford University Press (1978).