Iwanska, D., P. Tabor, E. Polak, M. Karczewska, A. Madej, A. Mastalerz, and C. Urbanik. “Symmetry during the take-off phase of countermovement jump in fencers”. Revista de Artes Marciales Asiáticas, vol. 11, no. 2s, Sept. 2016, pp. 26-27, doi:10.18002/rama.v11i2s.4155.