WOJDOWSKI, W. Measurements of dispersion of ultrasonic wave velocity in thin layers by the ultrasonic spectroscopy. Archives of Acoustics, [S. l.], v. 17, n. 3, p. 357–374, 2014. Disponível em: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/1194. Acesso em: 26 apr. 2025.