Yang, Liu
Verba, Roman
Tiberkevich, Vasil
Schneider, Tobias
Smith, Andrew
Duan, Zheng
Youngblood, Brian
Lenz, Kilian
Lindner, Jürgen
Slavin, Andrei N.
Krivorotov, Ilya N.
Article History
Received: 24 August 2015
Accepted: 22 October 2015
First Online: 23 November 2015
Competing interests
: The authors declare no competing financial interests.