Colliding waves in an excitable medium: preservation, annihilation and bifurcation,

Colliding waves in an excitable medium: preservation, annihilation and bifurcation

Colliding waves in an excitable medium: preservation, annihilation and bifurcation,
Argentina, M., P. Coullet, and L. Mahadevan,  Physical Review Letters , 79, 2803-07, 1997.