Wang, L. Y.
Wang, X. T.
Chen, L.
Zhang, Y.
Xia, Q. L.
Liu, G. D.
Funding for this research was provided by:
National Natural Science Foundation of China (51271071)
Key Basic Research Program of Applied Basic Research Program of Hebei Province (E2013202181)
Hebei Province Natural Science Foundation (abc-123)
Hebei Province Higher Education Science and Technology Research Foundation for Youth Scholars (Q2012008)