Instabilities and Non-equilibrium Structures. On the occasion of the 60th birthday of Pierre Coullet M.G. Clerc, S. Rica and J. Tredicce Eur. Phys. J. D, 62 1 (2011) 1-4 Published online: 05 April 2011 DOI: 10.1140/epjd/e2011-20150-0