TY - Journal of Yangtze River Scientific Research Institute A1 - MA Gao-qiang T1 - Constitutive Models of Half-homogeneous Sandstone Based on Damage Evolution Y1 - 2018-06-01 JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 86 EP - 91 VL - 35 IS - 6 UR - http://ckyyb.crsri.cn N1 - 10.11988/ckyyb.20160787 ER -