Fermat's principle in elastodynamics
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In general anisotropic inhomogeneous elasticity, disturbances propagate along rays which are neither straight nor perpendicular to the wave fronts, but, as in optics, they are still characterized by their rendering the time of travel between two points stationary.
[1] Paul Adrien Maurice Dirac. Generalized Hamiltonian dynamics , 1950 .
[2] E. Cumberbatch,et al. Non-linear Theory of Wave-front Propagation , 1965 .
[3] Wave fronts in elastic membranes , 1982 .