Mileva, Niya Boykova, and Dobrin Iotkov Vassilev. 2020. “Intravascular Ultrasound Imaging for Evaluation of Aortic Elastic Properties: Review of the Literature and a Single-Center Experience”. Cardiology and Cardiovascular Medicine 4 (4):396-99. http://www.fortunejournals.org/ojs/index.php/ccm/article/view/15901.