Discrete nonlinear Schrödinger breathers in a phonon bath K. Ø. Rasmussen, S. Aubry, A. R. Bishop and G. P. Tsironis Eur. Phys. J. B, 15 1 (2000) 169-175 Published online: 15 May 2000 DOI: 10.1007/PL00011032