1. Alteration of crude oil by waters and bac-teria-evidence from geochemical and isotope studies;Bailey;Bull. Am. Assoc. Pet. Geol.,1973
2. Fraktionierung der Kohlenstoffisotope durch mikrobiologische Prozesse in der biochemischen Zone Zeitschr;Lebedew;Angew Geol.,1969
3. Petroleum transformations in reservoirs;Milner;J. Geochem. Explor.,1977
4. Optical rotation of petroleums;Rosenfield;J. Am. Oil Chem. Soc.,1967
5. Source rock crude oil correlation by isotopic type-curves;Stahl;Geochim. Cosmochim. Acta.,1978