1. Natural CO2 reservoirs on the Colorado Plateau – candidates for CO2 sequestration;Allis,2001
2. Oil fields of Royal Dutch-Shell group in western Venezuela;Anonymous;Am. Assoc. Pet. Geol. Bull.,1948
3. Sour gas discovery at Emory field, Texas;Anonymous;Oil Gas J.,1951
4. Crude oil composition—a clue to migration;Biederman;World Oil,1965
5. Naturally occurring gas-hydrates in the Mackenzie Delta, N.W.T;Bily;Bull. Can. Pet. Geol.,1974