%0 Journal Article %T Constrain on Oil Recovery Stage during Oil Shale Subcritical Water Extraction Process Based on Carbon Isotope Fractionation Character %A Zhao, Rongsheng %A Ren, Luquan %A Deng, Sunhua %A Sun, Youhong %A Chang, Zhiyong %J Energies %V 14 %N 23 %@ 1996-1073 %D 2021-11-23 %I Multidisciplinary Digital Publishing Institute %~ DeepDyve