Zhao, Hui
Li, Lixiang
Peng, Haipeng
Xiao, Jinghua
Yang, Yixian
Zheng, Mingwen
Funding for this research was provided by:
the National Natural Science Foundation of China (Grant No. 61472045)
the Scientific Research Project of Beijing Municipal Commission of Education (Grant Nos. KZ201 50015015, KM201510015009)
the Beijing Natural Science Foundation (Grant No. 4142016)