Lisicki, B. 2023. Differentiation of Beta Coefficients during COVID-19 Pandemic – the Example of Stocks of the Largest Companies Listed on the Warsaw Stock Exchange. Krakow Review of Economics and Management/Zeszyty Naukowe Uniwersytetu Ekonomicznego w Krakowie. 4(998) (Mar. 2023), 11–28. DOI:https://doi.org/10.15678/ZNUEK.2022.0998.0401.