1. Spiral waves for λ-ω systems;Greenberg;SIAM J. Appl. Math.,1980
2. Plane wave solutions to reaction-diffusion equations;Kopell;Studies in Appl. Math.,1973
3. Pattern formation in the Belousov reaction;Koppell,1974
4. Wave trains, shock fronts, and transition layers in reaction-diffusion equations;Koppell,1974