TY - Journal of Yangtze River Scientific Research Institute A1 - YANG Ke, HAN Chao, LIU Xiao-lin T1 - Creep Experiments and Theoretical Model on Sandstone under Step Loading and Unloading Y1 - JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 97 EP - 102 VL - 38 IS - 3 UR - http://ckyyb.crsri.cn N1 - 10.11988/ckyyb.201914022021 ER -