5Ourisson G,Albrecht P,Rohmer M.Predictive microbial biochemistry from molecular fossils to prokaryotic membranes[J].Trends in Biochemical Sciences,1982,7:236-239.
6Venkatesan M I.Tetrahymanol:Its widespread occurrence and geochemical significance[J].Geochimica et Cosmochimica Acta,1989,53(11):3 095-3 101.
7ten Haven H L,Rohmer M,Rullkotter J.Tetrahymanol,the most likely precursor of gammacerane,occurs ubiquitously in marine sediments[J].Geochimica et Cosmochimica Acta,1989,53(11):3 073-3 079.
8Philp R P,Gilbert T D,Fridrich J.Bicyclic sesquiterpenoids and diterpenoids in Australian crude oils[J].Geochimica et Cosmochimica Acta,1981,45(7):1 173-1 180.
9Mackenzie A S,Patience R L,Maxwell J R.Molecular parameters of maturation in the Toarcian shales.Paris Basin,Franc-I,Changes in the configuration of acyclic isoprenoid alkanes,steranes,and triterpanes[J].Geochimica et Cosmochimica Acta,1980,44(11):1 709-1 721.