Leakey, Roger, Greenwell, P., Hall, M.N., Atangana, A.R., Usoro, C., Anegbeh, P.O., Fondoun, J-M., and Tchoundjeu, Z. (2005) Domestication of Irvingia gabonensis: 4. tree-to-tree variation in food-thickening properties and in fat and protein contents of dika nut. Food Chemistry, 90 (3). pp. 365-378.

Leakey, Roger R.B., Tchoundjeu, Zacharie, Smith, Rognvald I., Munro, Robert C., Fondoun, Jean-Marie, Kengue, Joseph, Anegbeh, Paul O., Atangana, Alain R., Waruhiu, Annabelle N., Asaah, Ebenezer, Usoro, Cecilia, and Ukafor, Victoria (2004) Evidence that subsistence farmers have domesticated indigenous fruits (Dacryodes edulis and Irvingia gabonensis) in Cameroon and Nigeria. Agroforestry Systems, 60 (2). pp. 101-111.

Atangana, A.R., Ukafor, V., Anegbeh, P., Asaah, E., Tchoundjeu, Z., Fondoun, J-M., Ndoumbe, M., and Leakey, R.R.B. (2002) Domestication of Irvingia gabonensis: 2. The selection of multiple traits for potential cultivars from Cameroon and Nigeria. Agroforestry Systems, 55 (3). pp. 221-229.