1. Novel tricyclic terpanes (C19, C20) in sediments and petroleums;Aquino Neto;Tetrahedron Lett.,1982
2. Oxic and anoxic diagenesis of diterpanes in lacustrine sediments;Barnes,1983
3. Hydrocarbon geochemistry of the Puget Sound region—II. Sedimentary diterpenoid hydrocarbons;Barrick;Geochim. Cosmochim. Acta,1981
4. Organic compounds in coal: structure and origin;Baset,1980
5. Fingerprint gas chromatography in the analysis of some native bitumens, asphalts and related substances;Douglas,1974