[Xing, Lining; Ren, Teng; Wang, Zhongwei] Cent South Univ Forestry & Technol, Sch Transportat & Logist, Changsha 410018, Hunan, Peoples R China.
[Xiao, Helu] Hunan Normal Univ, Business Sch, Changsha 410081, Hunan, Peoples R China.
[Zhou, Zhongbao] Hunan Univ, Sch Business Adm, Changsha 410082, Hunan, Peoples R China.
[Zhang, Xinguang] Yantai Univ, Sch Math & Informat Sci, Yantai 264005, Shandong, Peoples R China.
[Zhang, Xinguang] Qufu Normal Univ, Sch Math Sci, Qufu 273165, Shandong, Peoples R China.