Cheyns, E., N. Bricas, and A. Aka. “Quality Requirements of Urban Consumers and Marketing Chains for Red Palm Oil in Côte d’Ivoire”. Cahiers Agricultures, vol. 13, no. 1, Jan. 2004, pp. 135-141 (1), https://revues.cirad.fr/index.php/cahiers-agricultures/article/view/30433.