TY - Journal of Beijing University of Posts and Telecommunications A1 - ZHANG Jingtian, MA Ying, WENG Xun, SUN Zhuangzhi, ZHANG Jilong T1 - Optimization of Lifts Scheduling for Four-Way Shuttle Systems Y1 - 2021-12-16 00:00:00.0 JF - Journal of Beijing University of Posts and Telecommunications JO - Journal of Beijing University of Posts and Telecommunications SP - 19 EP - 25,81 VL - 45 IS - 1 UR - {https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2021-069} N1 - 10.13190/j.jbupt.2021-069 ER -