TY - Journal of Shandong University(Engineering Science) A1 - WANG Yan-yan, WU Yao-hua, SUN Guo-hua, YU Hong-peng T1 - Research on  picking  order  batching  policy  of  a  distribution  center Y1 - 2010-04-16 JF - Journal of Shandong University(Engineering Science) JO - Journal of Shandong University(Engineering Science) SP - 43 EP - 46 VL - 40 IS - 2 UR - http://gxbwk.njournal.sdu.edu.cn N1 - ER -