Ru, Jidong
Qian, Xueren
Wang, Ying
Funding for this research was provided by:
the Youth Science Fund of Heilongjiang Province of China (QC2017079)
the science and technology project of Qiqihar (GYGG-201513)
the Fundamental Research Funds in Heilongjiang Province universities (135209208)
the Fundamental Research Funds in Heilongjiang Province universities (135109246)
Article History
Received: 7 May 2018
Accepted: 17 July 2018
First Online: 19 July 2018