Karviná Ph.D. Conference on Business and Economics. International Scientific Conference. Karviná Ph.D. Conference on Business and Economics : Proceedings of 11th International Scientific Conference, November 7 - 9, 2018, (Karviná, Czech Republic). 1st Edition. Karviná : Silesian University in Opava. School of Business Administration in Karviná, 2018. 113 s. ISIP/2018. ISBN 978-80-7510-322-2.