[1] Guangxi Minzu Normal Univ, Econ & Management Dept, Chongzuo, Peoples R China
[2] Chung Yuan Christian Univ, Dept Finance, Taipei, Taiwan
[3] Shanghai Jiao Tong Univ, Antai Coll Econ & Management, 1954 Huashan Rd, Shanghai 200030, Peoples R China
[4] Shanghai Business Sch, Res Ctr Finance, Shanghai, Peoples R China
[5] Natl Yang Ming Chiao Tung Univ, Dept Informat Management & Finance, Taiwan, Peoples R China