LITNIEWSKI, Jerzy. An acoustic microscope in measurements of mechanical properties of surface layers – V(z). Archives of Acoustics, [S. l.], v. 11, n. 3, p. 299–312, 1986. Disponível em: http://acoustics.ippt.gov.pl/index.php/aa/article/view/3126. Acesso em: 18 apr. 2026.