Replica-symmetric solutions of a dilute Ising ferromagnet in a random field M. O. Hase, J. R.L. de Almeida and S. R. Salinas Eur. Phys. J. B, 47 2 (2005) 245-249 Published online: 11 October 2005 DOI: 10.1140/epjb/e2005-00313-2