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2. The porphyrins of Serpiano oil shale: structures and significance;Chicarelli,1985
3. The microbial input in carbonate-anhydrite facies of a sabkha palaeoenvironment;Connan,1986
4. Origine et transformation de terpènes dans les sédiments récents;Corbet;Colloq. Int. C.R.N.S.,1983
5. Photochemical or photomimetic fossil triterpenoids in sediments and petroleum;Corbet;J. Am. Chem. Soc.,1980