Porenta, T.
Čopar, S.
Ackerman, P. J.
Pandey, M. B.
Varney, M. C. M.
Smalyukh, I. I.
Žumer, S.
Article History
Received: 16 October 2014
Accepted: 13 November 2014
First Online: 5 December 2014
Competing interests
: The authors declare no competing financial interests.