D. Ortenburger, J. Wasik, M. Kluszczynski, T. Gora. "PRO-HEALTH EFFECTS OF TAEKWONDO TRAINING BY YOUTH - SELECTED ASPECTS." 4th International Multidisciplinary Scientific Conference on Social Sciences and Arts SGEM 2017 (2017): 525-532. https://doi.org/10.5593/sgemsocial2017/33/S12.069