Aging of the field-induced asymmetry in a disordered ferroelectric B. Bonello, P. Doussineau, V. Dupuis and A. Levelut Eur. Phys. J. B, 52 2 (2006) 219-225 Published online: 07 July 2006 DOI: 10.1140/epjb/e2006-00279-5