L. Wojnar, L. Szydlowski, and T. Marek-Szydlowska, “A NEW, OTHER THAN ACOUSTIC, QUANTIFICATION METHOD FOR ENDOCARDIUM DETECTION IN ECHOCARDIOGRAPHIC IMAGES”, Image Anal Stereol, vol. 20, no. 1, pp. 27–34, May 2011, doi: 10.5566/ias.v20.p27-34.