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BABELYUK, Valeriy, POPADYNETS’, Oleksandr, DUBKOVA, Galyna, ZUKOW, Walery, MUSZKIETA, Radosław, GOZHENKO, Anatoliy and POPOVYCH, Igor. Entropy of gas-discharge image correlates with the entropies of EEG, immunocytogram and leukocytogram but not HRV. Pedagogy and Psychology of Sport. Online. 16 April 2020. Vol. 6, no. 2, pp. 30-39. [Accessed 6 July 2025]. DOI 10.12775/PPS.2020.06.02.003.