1. Algunos aspectos da petrographia da ilha de São Tomé;Assunçao;Garcia de Orta, Rev. Junte Miss. Geog. Invest., Ultramar, Lisboa,1957
2. An example of very consistent brittle deformation over a wide intracontinental area: the late Pan-African fracture system of Tuareg and Nigerian shield;Ball;Tectonophysics,1980
3. Late Paleozoic to Recent igneous activity in West Africa and its relationship to basement structure;Black,1970
4. Structure et évolution géodynamique du bassin intracontinental de la Bénoué (Nigeria);Benkhelil,1986
5. Le fossé de la Bénoué, est-il un rift?;Benkhelil;Bull. Cent. Rech. Explor. Prod. Elf-Aquitaine,1983