1. Separation and identification of a new biological marker, 18β(H)-Oleanane in crude oils and ancient sediments using HRGC-MS;Caccialanza,1987
2. Organic geochemistry of some sediments and petroleum of the Niger delta: The terpenoid aspect;Ekweozor,1978
3. Preliminary organic geochemical studies of samples from the Niger delta (Nigeria). I. analyses of crude oils for triterpanes;Ekweozor;Chem. Geol.,1979
4. Petroleum source-bed evaluation of Tertiary Niger delta;Ekweozor;A.A.P.G. Bull.,1980
5. Petroleum Geochemistry: Application to petroleum exploration in Nigeria's Lower Benue Trough;Ekweozor;Nigerian J. Mining Geol.,1982