Kováčik, Jozef
Bujdoš, Marek
Babula, Petr
Funding for this research was provided by:
Slovak Grant Agency (VEGA 1/0164/17)
Article History
Received: 27 September 2017
Accepted: 22 January 2018
First Online: 2 February 2018
Compliance with ethical standards
:
: The authors declare that there are no conflicts of interest.