Wang, Junfeng
Zhou, Yu
Wang, Ziyu
Rasmita, Abdullah
Yang, Jianqun
Li, Xingji
von Bardeleben, Hans Jürgen
Gao, Weibo
Funding for this research was provided by:
National Research Foundation Singapore (NRF-NRFF2015-03)
Article History
Received: 22 December 2017
Accepted: 11 September 2018
First Online: 5 October 2018
Competing interests
: The authors declare no competing interests.