Korobeinikova, L. G., O. B. Zapovitriana, and V. S. Mischenko. “Aging Peculiarities of Psychophysiological State in Elite Athletes”. Cherkasy University Bulletin: Biological Sciences Series, vol. 352, no. 19, Jan. 2016, https://bio-ejournal.cdu.edu.ua/article/view/130.