TY - Journal of Yangtze River Scientific Research Institute A1 - RAO Yun-kang, DING Yu, XU Wen-nian, ZHANG Liang, ZHANG Heng, PAN Bo T1 - Estimating Maximum Dry Density of Gravel Soil by Back Propagation Neural Network Optimized by Genetic Algorithm Y1 - 2019-04-01 JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 88 EP - 92 VL - 36 IS - 4 UR - http://ckyyb.crsri.cn N1 - 10.11988/ckyyb.20180281 ER -