Spin glass and ferromagnetism in Kondo lattice compounds S. G. Magalhães, A. A. Schmidt, A. Theumann and B. Coqblin Eur. Phys. J. B, 30 4 (2002) 419-425 Published online: 31 December 2002 DOI: 10.1140/epjb/e2002-00398-y