WESOŁOWSKI, Z. Nonlinear Interaction Between Two Shear Waves in Elastic Material. Engineering Transactions, [S. l.], v. 39, n. 1, p. 97–110, 1991. Disponível em: http://et.ippt.gov.pl/index.php/et/article/view/1616. Acesso em: 17 jan. 2026.