1. Stratigraphy of the type section of Awi Formation, Odukpani area south-eastern Nigeria;Adeleye;J. Mining Geol.,1978
2. Efficiency of Rock phosphate as fertilizer source in South – western Nigeria;Akande;J., Plant Nutr.,1998
3. Atomic H/C ratio of kerogen as an estimate of thermal maturity and organic matter conversion;Baskin;Am. Assoc. Pet. Geol. Bull.,1997
4. Bassey, E.D., 2010. The sedimentology and age determination of the New Netim Marl, Calabar Flank, southeastern Nigeria. University of Calabar, Unpublished M.Sc Thesis. XIV, 107p.
5. Trace elements characteristics of graywackes and tectonic setting discrimination of sedimentary basins;Bhatia;Contrib. Miner. Petrol.,1986