1. Delvigne, J. (1969) Geochemical Assessments of the Alteration of Basic Rocks in Ferrallitic Ivory Coast. Revue de Géographie Physique et de Géologie Dynamique, 9, 311-320.
2. Wefers, K. and Misra, C. (1987) Aluminum Oxides and Hydroxides. Laboratories-Aluminum Company of America, Document No. 19.
3. Nahon, D. (2003) Alterations in the Tropical Zone. Meaning through Old and/or current Mechanisms. Geoscience Reports, 335, 1109-1119.
4. Hieronymus, B. (1973). Mineralogical and Geochemical Study of Bauxitic Formations in Western Cameroon. Cahiers Office de la Recherche Scientifique et Technique Outre-Mer Série Géologie (Cah. ORSTOM, sér. Géol.), 5, 97-112.
5. Bauxite provinces of the world