[1] Hulunbuir Univ, Sch Law & Econ Management, Hulunbuir, Peoples R China
[2] Pukyong Natl Univ, Grad Sch Management Technol, Busan, South Korea
[3] Yunnan Agr Univ, Coll Trop Crops, Kunming, Yunnan, Peoples R China
[4] Linyi Vocat Univ Sci & Technol, Dept Econ Management, Linyi, Shandong, Peoples R China