Stolárik, Tibor
Henselová, Mária
Martinka, Michal
Novák, Ondřej
Zahoranová, Anna
Černák, Mirko
Article History
Received: 10 March 2015
Accepted: 27 March 2015
First Online: 9 April 2015
Free to read: This content has been made available to all.