Cheraou, Salwa, et al. “Pharmacological Stress Echocardiography at Dobutamine in the Search of Ischemia: Epidemiological, Clinical and Tolerance Profile about 270 Patients”. RA Journal Of Applied Research, vol. 6, no. 5, May 2020, pp. 2687-93, doi:10.33826/rajar/v6i5.03.