KONIECZNY, Grzegorz; PUSTELNY, Tadeusz; OPILSKI, Zbigniew; GAWLIKOWSKI, Maciej. Acoustic System of Determining the Instantaneous Volume of the Blood Part of the Ventricular Assist Device POLVAD-EXT. Archives of Acoustics, [S. l.], v. 39, n. 4, p. 541–548, 2014. DOI: 10.2478/aoa-2014-0058. Disponível em: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/933. Acesso em: 25 apr. 2025.