Kudryavtsev, M. D., I. E. Kramida, Y. Kopylov, A. Osipov, K. Markov, A. N. Savchuk, and V. Kuzmin. “Qigong Training As a Successful Factor of fighter’s Personal Qualities Development in Students”. Physical Education of Students, vol. 22, no. 4, Aug. 2018, pp. 190-5, doi:10.15561/20755279.2018.0404.