Approximate entropy and sample entropy algorithms in financial time series analyses. - Joanna Olbrys; Elzbieta Majewska (KES, 2022)

Regularity in Stock Market Indices within Turbulence Periods: The Sample Entropy Approach. - Joanna Olbrys; Elzbieta Majewska (Entropy, 2022)

Extended Hellwig's Method Utilizing Entropy-Based Weights and Mahalanobis Distance: Applications in Evaluating Sustainable Development in the Education Area. - Ewa Roszkowska; Marzena Filipowicz-Chomko; Anna Lyczkowska-Hanckowiak; Elzbieta Majewska (Entropy, 2024)