D. Mercea, C. Pop, D. Leucuţa, D. Pop, and D. Zdrenghea, “The Frequency of Systolic Disfunction May Be Correlated with the Incidence of Acute Coronary Syndrome in Patients with Degenerative Aortic Stenosis: a Prospective Clinical Study”, Medicine and Pharmacy Reports, vol. 85, no. 3, pp. 390-395, Feb. 2014.