Observation of magnetoresistance in core–shell Fe–Fe oxide systems. - Savini, L.; Bonetti, E.; Bianco, L. Del; Pasquini, L.; Signoretti, S.; Allia, P.; Coisson, M.; Moya, J.; Selvaggini, V.; Tiberto, P.; Vinai, F. (Journal of Applied Physics, 2002)