TY - Journal of Shandong University(Engineering Science) A1 - Jun QIN,Weidong LI,Jinli YI,Jing LIU,Maode MA T1 - Ant colony optimization for solving maximization problem based ondouble heuristic information Y1 - 2020-06-20 JF - Journal of Shandong University(Engineering Science) JO - Journal of Shandong University(Engineering Science) SP - 45 EP - 50 VL - 50 IS - 3 UR - http://gxbwk.njournal.sdu.edu.cn N1 - 10.6040/j.issn.1672-3961.0.2019.306 ER -