1. Specific acyclic isoprenoids as biological markers of methanogenic bacteria in marine sediments;Brassell;Nature,1981
2. Migration controls on the occurrence of economic bacterial gas accumulations;Brown,1997
3. Source volumetrics of biogenic gas generation;Clayton,1992
4. Bacterial biomass and activity in the deep sediment layers of the Japan Sea, hole 798B;Cragg,1992
5. Distinction of bacterial and thermogenic hydrocarbons;Faber,1992