HATFIELD, G.; OLVER, P.J. Canonical forms and conservation laws in linear elastostatics. Archives of Mechanics, Warsaw, Poland, v. 50, n. 3, p. 389–404, 1998. Disponível em: http://am.ippt.gov.pl/index.php/am/article/view/v50p389. Acesso em: 17 jan. 2026.