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Southwestern Univ Finance & Econ, Sch Business Adm, Chengdu 610074, Sichuan, Peoples R China
Univ Strasbourg, Bur Econ Theor & Appl, F-67085 Strasbourg, France Southwestern Univ Finance & Econ, Sch Business Adm, Chengdu 610074, Sichuan, Peoples R China