1. Fatty acids in sedimentary rocks;Abelson;Carnegie Inst. Wash. Yearb.,1962
2. Cycloalkane constituents of the bitumen from Green River shale;Anders;Geochim. Cosmochim. Acta,1971
3. The isolation of steranes from Green River oil shale;Anderson;Geochim. Cosmochim. Acta,1969
4. Infrared Spectra of Complex Molecules;Bellamy,1958
5. Occurrence of biogenic steranes and pentacyclic triterpanes in an Eocene shale (52 million years) and in an early Precambrian shale (2.7 billion years). A preliminary report;Burlingame,1965