An attempt to develop a model of brain waves using quantitative electroencephalography with closed eyes in K1 kickboxing athletes - initial concept - Rydzik, L.; Palka, T.; Sobilo-Rydzik, E.; Tota, L.; Ambrozy, D.; Ambrozy, T.; Ruzbarsky, P.; Czarny, W.; Kopanska, M. (Sensors, 2023)