1. Organic geochemistry and the formation of petroleum;Abelson;6th World Petroleum Congress Proceedings, Sec,1963
2. Organic geochemistry of Cherokee Group in southeastern Kansas and northeastern Oklahoma;Baker;American Association of Petroleum Geologists Bulletin,1962
3. 17α(H)-hopane identified in oil shale of the Green River Formation (Eocene) by carbon 13 NMR;Balogh;Nature,1973
4. Crude oil correlations and their role in exploration;Barbat;American Association of Petroleum Geologists Bulletin,1967
5. Oil source rock correlation aid drilling site selection;Barker;World Oil,1981