KLECHA, T. Surface stress waves in a nonhomogeneous elastic half-space. Part I. General results based on spectral analysis. Existence and analyticity theorems. Archives of Mechanics, Warsaw, Poland, v. 48, n. 3, p. 493–512, 1996. DOI: 10.24423/aom.1353. Disponível em: http://am.ippt.gov.pl/index.php/am/article/view/v48p493. Acesso em: 17 jan. 2026.