PILARSKI, Aleksander. Ultrasonic wave propagation in a layered medium under different boundary conditions. Archives of Acoustics, [S. l.], v. 7, n. 1, p. 61–70, 2016. Disponível em: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/3270. Acesso em: 25 apr. 2025.