Liu, Zhongchuang
Wang, Li-ao
Ding, Shimin
Li, Yuehan
Funding for this research was provided by:
Research Project of Yangtze Normal University (2016XJQN24, 2016KYQD28)
Science and Technology Research Project of Chongqing Municipal Education Commisson (KJ1712313)
Article History
Received: 21 November 2017
Accepted: 5 February 2018
First Online: 15 February 2018