Nekhanevich, O.B. and Kuznetsova, M.A. 2014. Usage of echocardiography with physical loads for diagnosis of myocardial contractile reserve of the left ventricle in athletes. Medicni perspektivi. 19, 3 (Sep. 2014), 75–81. DOI:https://doi.org/10.26641/2307-0404.2014.3.30406.