FILIPCZYŃSKI, L. Detectability of small blood vessels and flat boundaries of soft tissues in the ultrasonic pulse echo method. Archives of Acoustics, [S. l.], v. 6, n. 1, p. 46–56, 2016. Disponível em: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/3293. Acesso em: 26 apr. 2025.