Zhao, Jiantao
Tian, Jianjun Paul
Wei, Junjie
Funding for this research was provided by:
National Natural Science Foundation of China (No.11371111)
Research Fund for the Doctoral Program of Higher Education of China (No.20122302110044)
Natural Science Foundation of Heilongjiang Province of China (No.A201422)
Program for Young Teachers Scientific Research in Qiqihar University (No.2012k-M28)
Natural Science Foundation of Shandong Province of China (No.ZR2015AQ005)
National Science Foundation of US (DMS-1446139)
National Natural Science Foundation of China (No.11371048)
Article History
Received: 10 August 2015
Accepted: 12 February 2016
First Online: 2 March 2016