1. Palynology and age of the Kerri-Kerri Formation, Nigeria;Adegoke;Rev. Esp. Micropal,1978
2. Sedimentary petrology of the Kerri-Kerri Formation in Bauchi and Borno States, Nigeria;Agumanu,1976
3. Aspects of the stratigraphy of the Kerri-Kerri Formation in the Bauchi and Borno States, Nigeria;Ajayi,1976
4. Pressure water in the Chad Formation, Bornu and Dikwa Emirates, North-Eastern Nigeria;Barber;Bull Geol. Surv. Nigeria,1965
5. Structural map of the Upper Benue Valley;Benkhelil;J. Min. Geol.,1986