Ferromagnetic behaviour in semiconductors: a new magnetism in search of spintronic materials A. Quesada, M. A. García, J. de la Venta, E. Fernández Pinel, J. M. Merino and A. Hernando Eur. Phys. J. B, 59 4 (2007) 457-461 Published online: 02 March 2007 DOI: 10.1140/epjb/e2007-00063-1