Distribution and characterization of C31 sterane from cretaceous sediments and oils, Songliao Basin, China Hou, Dujie ; Wang, Tieguan ; Kong, Qingyun ; Feng, Zihui ; Moldowan, J. M. Abstract Publication: Chinese Science Bulletin Pub Date: March 1999 DOI: 10.1007/BF02885548 Bibcode: 1999ChSBu..44..560H