**Author details**

Wladimir Schubert<sup>1</sup> , Beáta Gavurová2 \*, Viliam Kováč2 and Martin Užík1

\*Address all correspondence to: beata.gavurova@tuke.sk

1 Berlin School of Economics and Law, Berlin, Germany

2 Department of Banking and Investment, Faculty of Economics, Technical University of Košice, Košice, Slovak Republic
