Topchii, I., P. Semenovykh, O. Kirienko, D. Kirienko, O. Tsygankov, and L. Gridasova. “Indicators of Hemodynamic and Structural Heart Parameters in Patients With Comorbid Pathology”. Medicine Today and Tomorrow, Vol. 90, no. 1, Mar. 2021, pp. 44-51, doi:10.35339/msz.2021.90.01.05.