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ZUKOW, Walery, FLYUNT, Igor-Severyn, PONOMARENKO, Ruslan, RYBAK, Nadiya, FIL’, Vitaliy, KOVALCHUK, Halyna, SARANCHA, Serhiy & NAHURNA, Yaryna. Polivariant change of step-test under the influence of natural adaptogens and their accompaniments. Pedagogy and Psychology of Sport [online]. 27 April 2020, T. 6, nr 2, s. 74–84. [accessed 4.12.2021]. DOI 10.12775/PPS.2020.06.02.007.