Song, Daohong
Paltoglou, Vassilis
Liu, Sheng
Zhu, Yi
Gallardo, Daniel
Tang, Liqin
Xu, Jingjun
Ablowitz, Mark
Efremidis, Nikolaos K.
Chen, Zhigang
Article History
Received: 22 August 2014
Accepted: 12 January 2015
First Online: 17 February 2015
Competing interests
: The authors declare no competing financial interests.