Proceedings of International Conference Economic and Societal Challenges of the European Economy (Covid and Post-Covid Period) : International Scientific Conference. Pp. 88-95. - Karviná : Silesian University in Opava. School of Business Administration in Karviná, 2021 / Kotlánová Eva ; Economic and Societal Challenges of the European Economy (Covid and Post-Covid Period) International Scientific Conference. ISBN 978-80-7510-488-5