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German Journal of Exercise and Sport Research > 2018 > 48 > 4 > 530-543
Psychotherapeut > 2006 > 51 > 4 > 290-299
German Journal of Exercise and Sport Research > 2018 > 48 > 4 > 530-543
Psychotherapeut > 2006 > 51 > 4 > 290-299