TY - Journal of Shandong University(Engineering Science) A1 - LIU Debao, WU Yaohua, GUO Yaoyang, WANG Yanyan T1 - Item assignment optimization of automatic picking system based on hybrid picking strategy Y1 - 2015-12-20 JF - Journal of Shandong University(Engineering Science) JO - Journal of Shandong University(Engineering Science) SP - 36 EP - 44 VL - 45 IS - 6 UR - http://gxbwk.njournal.sdu.edu.cn N1 - 10.6040/j.issn.1672-3961.0.2015.061 ER -