PIECHOCKI, Maciej. Bi-directional continuous wave doppler flowmeter and its application in investigations of disturbed blood flows. Archives of Acoustics, [S. l.], v. 11, n. 1, p. 75–88, 2015. Disponível em: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/3110. Acesso em: 26 apr. 2025.