Ongarbaeva, D. T., S. K. Kurmanaliyev, I. Krugovykh, N. Degert, and J. Sagot. “Study of the Functional State of Cardiorespiratory System of Students of the Al-Farabi Kazakh National University”. International Journal of Biology and Chemistry, vol. 10, no. 1, June 2017, pp. 19-24, doi:10.26577/2218-7979-2017-10-1-19-24.