Institution: | 1. Research Center for the Economies and Politics of Transitional Countries, Liaoning University, Shenyang, China;2. Collaborative Innovative Center for Aviation Economy Development of Henan Province, Zhengzhou University of Aeronautics, Henan Zhengzhou, China;3. School of Economy and Trade, Zhengzhou University of Aeronautics, Henan Zhengzhou, China |