Kozin, V., O. Falova, M. Cretu, and M. Cieślicka. “Determination of Fighting Styles of Qualified Veteran Boxers Based on Cluster Analysis of Biomechanical and Psychophysiological Indicators”. Health, Sport, Rehabilitation, Vol. 7, no. 4, Dec. 2021, pp. 19-34, doi:10.34142/HSR.2021.07.04.02.