Rudenko, S. A., S. V. Potashev, and A. V. Rudenko. “Demographic and Clinical Features in Patients With Mitral Insufficiency of Ischemic Genesis”. Ukrainian Journal of Cardiovascular Surgery, no. 2 (39), May 2020, pp. 29-32, doi:10.30702/ujcvs/20.3905/034029-032.