Entropic stochastic resonance: the constructive role of the unevenness P. S. Burada, G. Schmid, D. Reguera, J. M. Rubi and P. Hänggi Eur. Phys. J. B, 69 1 (2009) 11-18 Published online: 18 February 2009 DOI: 10.1140/epjb/e2009-00051-5