Percival, I. C. A variational principle for invariant tori of fixed frequency. (English) Zbl 0394.70018 J. Physics A 12, L57-L60 (1979). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 ReviewCited in 23 Documents MSC: 70H03 Lagrange’s equations 70J30 Free motions in linear vibration theory Keywords:Conservative Dynamical Systems; Lagrangian Variational Principle; Invariant Tori PDFBibTeX XMLCite \textit{I. C. Percival}, J. Phys. A, Math. Gen. 12, L57--L60 (1979; Zbl 0394.70018) Full Text: DOI