Long-range effects on superdiffusive algebraic solitons in anharmonic chains C. Brunhuber, F. G. Mertens and Y. Gaididei Eur. Phys. J. B, 57 1 (2007) 57-65 Published online: 25 May 2007 DOI: 10.1140/epjb/e2007-00150-3