Zhu, T.
Li, R. R.
Ma, M. F.
Li, X.
Funding for this research was provided by:
Program for New Century Excellent Talents in China (NCET120967)
Beijing outstanding talent training project (2012ZG81)
Open Funds of State Key Laboratory of Coal Resources and Safe Mining(CUMTB) (SKLCRSM16KFA04)
Fundamental Research Funds for the Central Universities (2009QH03)