Dorota Ortenburger, Jacek Wasik, Alena Bukova, Tomasz Gora, Comparison of strategies used by patients undergoing treatment for chronic pain people performing taekwon-do : a pilot study, Ido Movement for Culture : journal of martial arts anthropology : theory of culture, psychophysical culture, cultural tourism, anthropology of martial arts, combat sports, 2016, 16, 3, s. 40-46