The 21st International Scientific Conference Globalization and its Socio-Economic Consequences : [online] 13-14.10.2021, Žilina, Slovensko / zostavovateľ Tomáš Klieštik . Les Ulis :  Édition Diffusion Presse Sciences , 2021 . online . ISSN 2261-2424
https://www.shs-conferences.org/articles/shsconf/abs/2021/40/contents/contents.html .