Frequency dependence of aging, rejuvenation and memory in a disordered ferroelectric J.-Ph. Bouchaud, P. Doussineau, T. de Lacerda-Arôso and A. Levelut Eur. Phys. J. B, 21 3 (2001) 335-340 Published online: 15 June 2001 DOI: 10.1007/s100510170175