Béresné, Bernadett, and Eszter Maklári. “The Economic and Social Effects of the COVID-19 Epidemic in the European Union over the Past Year, Especially in Hungary”. International Journal of Engineering and Management Sciences, vol. 6, no. 4, Dec. 2021, pp. 67-79, https://doi.org/10.21791/IJEMS.2021.4.7.