For citations:

Levushkin S.P., Karandashov V.I. Changes of heart rate variability in high-level athletes of winter sports in their recovery period after maximal physical exertions under the impact of the optical radiation of blue range. Laser Medicine. 2016;20(3):61-62. (In Russ.) https://doi.org/10.37895/2071-8004-2016-20-3-61-62