TY - Int J Performability Eng A1 - Yu Li, Qian Guo, and Jingsen Liu T1 - Improved Bat Algorithm for Vehicle Routing Problem Y1 - 2019-01-01 JF - International Journal of Performability Engineering JO - Int J Performability Eng SP - 317 EP - 325 VL - 15 IS - 1 UR - https://www.ijpe-online.com N1 - 10.23940/ijpe.19.01.p32.317325 ER -