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A.S. Landsberg and E. Knobloch. 1991. Direction-Reversing Traveling Waves. Physics Letters A 159: 17.

A simple mechanism for generating traveling waves which reverse their direction of propagation in a periodic manner is presented. This mechanism is generic in systems possessing O(2) symmetry, and corresponds to a codimension-one symmetry-breaking Hopf bifurcation from a circle of nontrivial steady states.

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