D. Teferici, A. Shtylla, E. Prifti, A. Baboci, and I. Sharka, “2D - Strain Imaging and Its Diagnostic Value in Patients with Suspected Coronary Artery Disease”, Int. Jour. Res. Dev, vol. 4, no. 1, p. 191, Mar. 2017, doi: 10.56345/ijrdv4n110.