Reshchikov, M. A.
McNamara, J. D.
Toporkov, M.
Avrutin, V.
MorkoƧ, H.
Usikov, A.
Helava, H.
Makarov, Yu.
Article History
Received: 21 July 2016
Accepted: 28 October 2016
First Online: 30 November 2016
Competing interests
: The authors declare no competing financial interests.