Magnetic properties of iron oxide nanoparticles investigated by nanoSQUIDsCarmine Granata, Roberto Russo, Emanuela Esposito, Antonio Vettoliere, Maurizio Russo, Anna Musinu, Davide Peddis and Dino FioraniEur. Phys. J. B, 86 6 (2013) 272DOI: https://doi.org/10.1140/epjb/e2013-40051-2