Ivanov, Yurii P.
Alfadhel, Ahmed
Alnassar, Mohammed
Perez, Jose E.
Vazquez, Manuel
Chuvilin, Andrey
Kosel, Jürgen
Article History
Received: 18 January 2016
Accepted: 21 March 2016
First Online: 13 April 2016
Competing interests
: The authors declare no competing financial interests.