SKUMIEL, A.; HORNOWSKI, T.; JÓZEFCZAK, A. Acoustic and magnetic properties of magnetic fluids. Archives of Acoustics, [S. l.], v. 24, n. 2, p. 129–144, 1999. Disponível em: http://acoustics.ippt.gov.pl/index.php/aa/article/view/1059. Acesso em: 18 apr. 2026.