GEORGIEVA, B.; GUENTHER, R. B. First Noether-type theorem for the generalized variational principle of Herglotz. Topological Methods in Nonlinear Analysis, [S. l.], v. 20, n. 2, p. 261–273, 2002. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2002.036. Acesso em: 22 jul. 2024.