Zhou, Haoran
Yu, Weimiao
Qu, Chunyan
Liu, Changwei
Wang, Dezhi
Funding for this research was provided by:
Yorth Science Foundation of Heilongjiang Province (No. QC2014C008)
Science Foundation of Heilongjiang Academy of Sciences (No. 2014-YQ-01, No. 2015-YX-02, No. 2015-YQ-08)