Кійко, А. and Мулик, В. 2017. Attention indicator dynamics of qualified climbers influenced by hypoxic training during the overcoming various altitude levels of Mount Elbrus. Slobozhanskyi Herald of Science and Sport. 4(60) (Aug. 2017), 60–64. DOI:https://doi.org/10.15391/snsv.2017-4.010.