%0 Journal Article %T Experimental study of step-displacement hydraulic fracturing on naturally fractured shale outcrops %A Cheng,, Wan %A Jin,, Yan %A Chen,, Mian %J Journal of Geophysics and Engineering %V 12 %N 4 %@ 1742-2132 %D 2015-08-01 %I Oxford Academic %~ DeepDyve