1. A gravity interpretation of the Liruei ring complex;Ajakaiye;Geol. Mag.,1968
2. Gravity measurements over the Nigerian younger granites;Ajakaiye;Nature,1970
3. Pressure water in the Chad Formation;Barber;Geol. Surv. Niger., Bull.,1965
4. The fit of the continents around the Atlantic;Bullard,1965
5. The geological history of the Gulf of Guinea;Burke,1970