Farkaš, Pavol
Čížová, Alžbeta
Bystrický, Peter
Paulovičová, Lucia
Paulovičová, Ema
Bystrický, Slavomír
Article History
Received: 2 October 2015
Revised: 30 November 2015
Accepted: 2 December 2015
First Online: 14 December 2015
Free to read: This content has been made available to all.