1. Occurrence and formation of tricyclic and tetracyclic terpanes in sediments and petroleums;Aquino Neto,1983
2. Crude oil biodegradation under simulated and natural conditions Part II. Aromatic steroid hydro-carbons;Barwise,1983
3. An unusual C27-triterpane: 25,28,30-trisnormoretane;Bjoroy;Chem. Geol.,1980
4. An organic geochemical study of Mesozoic shales from Andoya, North Norway;Bjoroy,1981
5. Hydrocarbons of marine phytoplankton;Blumer;Mar. Biol.,1971