Weres, A., J. Zwolińska, A. Kwolek, and P. Szpunar. “The effectiveness of phototherapy and classic massage in reducing the symptoms of muscle fatigue after physical training”. European Journal of Clinical and Experimental Medicine, vol. 13, no. 2, June 2015, pp. 104–115, doi:10.15584/przmed.2015.2.4.