Baimuratov, Anvar S.
Gun’ko, Yurii K.
Baranov, Alexander V.
Fedorov, Anatoly V.
Rukhlenko, Ivan D.
Article History
Received: 20 January 2016
Accepted: 4 March 2016
First Online: 18 March 2016
Competing interests
: The authors declare no competing financial interests.