Gailevicius, Darius
Koliadenko, Volodymyr
Purlys, Vytautas
Peckus, Martynas
Taranenko, Victor
Staliunas, Kestutis
Article History
Received: 13 June 2016
Accepted: 15 August 2016
First Online: 29 September 2016
Competing interests
: The authors declare no competing financial interests.