COMPARISON OF IMMEDIATE EFFECTS OF VOCAL BREATHING EXERCISES AND PHYSICAL EXERCISES ON HEART RATE VARIABILITY IN HEALTHY STUDENTS Статья Kovalenko A.N., Kastyro I.V., Torshin V.I., Guhschina Y.S., Doroginskaya E.S., Kamanina N.A. Models and Analysis of Vocal Emissions for Biomedical Applications - 11th International Workshop, MAVEBA 2019. Firenze University Press. 2019. С. 245-248