Georgieva, B. and Guenther, R. B. (2002) “First Noether-type theorem for the generalized variational principle of Herglotz”, Topological Methods in Nonlinear Analysis, 20(2), pp. 261–273. Available at: https://apcz.umk.pl/TMNA/article/view/TMNA.2002.036 (Accessed: 3 July 2024).