E. Miakinchenko, A. Kryuchkov, G. Dudko, M. Dikunets, and P. Miakinchenko, “DYNAMICS AND DIFFERENCES OF BIOCHEMICAL PROFILE OF ATHLETES IN VARIOUS PHASES OF MIDDLE MOUNTAIN TRAINING COMPARED TO SEA LEVEL TRAINING”, hsm, vol. 19, no. 4, pp. 7-13, Jan. 2020.