Lupan, Oleg http://orcid.org/0000-0002-7913-9712
Schütt, Fabian
Postica, Vasile
Smazna, Daria
Mishra, Yogendra Kumar http://orcid.org/0000-0002-8786-9379
Adelung, Rainer
Article History
Received: 10 May 2017
Accepted: 9 October 2017
First Online: 7 November 2017
Competing Interests
: The authors declare that they have no competing interests.