235">The effect of origin and genetic processes of aromatic hydrocarbons in petroleum.
240">Oils from the North-West shelf of Australia.
245">未13C of the aromatic components show a 13C depletion as methylation increases.
250">未13C of the methyl groups display differences between ‘mature’ and ‘immature’ oils.
255">Isotopic fractionation associated with the methyl transfer mechanisms.