1. School of Management Science and Engineering, Shandong University of Finance and Economics, No. 7366, Second Ring East Road, Jinan, Shandong Province 250014, China
2. Institute for Production Management, WU Vienna University of Economics and Business, Welthandelsplatz 1, 1020 Vienna, Austria
3. Unit of Logistics and Informatics, KTH Royal Institute of Technology, Tekniringen 10, 10044 Stockholm, Sweden
4. School of Traffic and Transportation, Beijing Jiaotong University, Beijing 100044, China