Management 2018: Management and the World in Motion, Challenges, Opportunities and Threats : Proceedings of VII. International Scientific Conference, Spa Nový Smokovec (Congress Centre), High Tatras, Slovak Republic, 25-29 September 2018. Pp. 658-662. - Prešov : Bookman, 2018 / Frankovský Miroslav ; Dobrovič Ján ; Fedorko Richard ; Management 2018: Management and the World in Motion, Challenges, Opportunities and Threats. International Scientific Conference. ISBN 978-80-8165-300-1