JANOŠKOVÁ, Mária Ria - ČULKOVÁ, Katarína. Comparison of the business environment in Slovakia and V4 countries under the influence of the COVID-19 pandemic. In Marketing manažment, obchod, finančné a sociálne aspekty podnikania. Medzinárodná vedecká konferencia. Conference Proceeding of Research Papers of the 8th International Scientific Conference - Marketing Management, Trade, Financial and Social Aspects of Business - MTS 2023 : Košice (Slovakia) and Tarnobrzeg (Poland), September 21 -23, 2023. - Bratislava : Vydavateľstvo EKONÓM, 2023. ISBN 978-80-225-5088-8, pp. 96-107.