Jamal, Sameerah \(n^{\text{th}}\)-order approximate Lagrangians induced by perturbative geometries. (English) Zbl 1394.76108 Math. Phys. Anal. Geom. 21, No. 3, Paper No. 25, 9 p. (2018). MSC: 76M60 35Q75 34E10 35C20 58J37 PDFBibTeX XMLCite \textit{S. Jamal}, Math. Phys. Anal. Geom. 21, No. 3, Paper No. 25, 9 p. (2018; Zbl 1394.76108) Full Text: DOI
Di Salvo, Rosa; Gorgone, Matteo; Oliveri, Francesco A consistent approach to approximate Lie symmetries of differential equations. (English) Zbl 1390.34181 Nonlinear Dyn. 91, No. 1, 371-386 (2018). MSC: 34E10 34C14 35C06 35C20 58J37 58J70 PDFBibTeX XMLCite \textit{R. Di Salvo} et al., Nonlinear Dyn. 91, No. 1, 371--386 (2018; Zbl 1390.34181) Full Text: DOI arXiv