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Central European Journal of Sport Sciences and Medicine > 2017 > 20 > 4 > 39-51
Physical Culture and Sport. Studies and Research > 2010 > 50 > 1 > 32-43
Acta Universitatis Lodziensis. Folia Sociologica > Acta Universitatis Lodziensis. Folia Sociologica 2015, nr 55