P. M. Maundu, E. I. Njiro, J. A. Chweya, J. K. Imungiet and E. N. Seme, “The Biodiversity of Traditional Leafy Vegetable in Kenya,” In: J. A. Chewya and P. B. Eyzaguirre, Eds., Biodiversity of Traditional Leafy Vegetales, IPGRI, Rome, 1999, pp. 51-84.
 E. B. Rubaihayo, “Conservation and Use of Traditional Vegetables in Uganda,” Proceedings on Genetic Resources of Traditional Vegetables in Africa: Option for Conservation and Use, Nairobi, 29-31 August 1995.
 H. Tabuna, “Le Marché des Produits Forestiers non Ligneux de l’Afrique Centrale en France et en Belgique,” Center for International Forestry Research (CIFOR), Bogor Indonésie, Occasional Paper No. 19. 1999, pp. 1-32.
 O.O. Ekpe, I. B. Umoh and O. U. Eka, “Effect of a Typi- cal Rural Processing Method on the Proximate Composition and Amino Acid Profile of Bush Mango Seeds (Irvingia gabonensis),” African Journal of Food, Agriculture, Nutrition and Development, Vol. 7, No. 1, 2007, pp. 164-171.
 N. M. T. Kouamé and G. M. Gnahoua, “Spontaneous Food Trees and Lianas of the Semi Deciduous Forest Zone (Center-West of Ivory Coast): Species Encountered, Plant Parts Consumed and Food Values,” Proceedings of International Conference on Traditional Forest Knowledge, Accra, 15-18 October 2008, pp. 1-34.
 H. M. Womeni, R. Ndjouenkeu, C. Kapseu, M. F. Parmentier and J. Fanni, “Influence of Drying Techniques on the Kinetics of Almonds Water Loss and the Oil Quality of Irvingia gabonensis,” Alimentary and Biological Processes, Vol. 3, No. 1, 2006, pp. 46-61.