BUDZYŃSKI, Gustaw. XXIV-th Open Seminar On Acoustics. Archives of Acoustics, [S. l.], v. 3, n. 2, p. 141–149, 1978. Disponível em: https://acoustics.ippt.gov.pl/index.php/aa/article/view/3403. Acesso em: 4 mar. 2026.