Published Online: Aug 20, 2016
Page range: 105 - 107
DOI: https://doi.org/10.1515/atd-2016-0016
© 2016
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Viola Tamášová
Dubnica Institute of Technology in Dubnica nad Váhom, Dubnica nad Váhom, Slovakia
Silvia Barnová
Dubnica Institute of Technology in Dubnica nad Váhom, Dubnica nad Váhom, Slovakia