Kozina, Z., S. Iermakov, P. Bartík, T. Yermakova, and J. Michal. “Influence of self–regulation Psychological and Physical Means on Aged people´s Functional State”. Journal of Human Sport and Exercise, vol. 13, no. 1, Mar. 2018, pp. 99-115, doi:10.14198/jhse.2018.131.10.