1. Université de Nantes, IRCCyN UMR CNRS 6597; LUNAM Université; Nantes France
2. School of Logistics Engineering; Wuhan University of Technology; Wuhan China
3. School of Mathematical Sciences; Universiti Sains Malaysia; Penang Malaysia
4. Department of Information Systems, Statistics, and Management Science; University of Alabama; Tuscaloosa Alabama USA
5. Department of Statistics; University of Pretoria; Pretoria South Africa