Gurgul, H. and Syrek, R. 2024. Mutual information between the main foreign subindices: The application of copula entropy around WHO’s declaration date at the time of the COVID-19 pandemic. International Entrepreneurship Review. 10, 2 (Jun. 2024), 7–24. DOI:https://doi.org/10.15678/IER.2024.1002.01.