Georgieva, B. and Guenther, R. B. (2005) “Second Noether-type theorem for the generalized variational principle of Herglotz”, Topological Methods in Nonlinear Analysis, 26(2), pp. 307–314. Available at: https://apcz.umk.pl/TMNA/article/view/TMNA.2005.034 (Accessed: 3 July 2024).