Authors
Kristina Trush
Pavol Jozef Šafárik University in Košice, Košice, Slovak Republic
Natália Handzušová
Pavol Jozef Šafárik University in Košice, Košice, Slovak Republic
Peter Paľove-Balang
Pavol Jozef Šafárik University in Košice, Košice, Slovak Republic