Banaszyk, Piotr, Przemysław Deszczyński, Marian Gorynia, and Krzysztof Malaga. 2021. “Premises for Modification of Selected Economic Concepts Induced by the COVID-19 Pandemic”. DEMO 5 (1): 33-60. https://doi.org/10.18559/RIELF.2021.1.2.