@article{articleaf99fc89,
title   = {Biocompatible superparamagnetic iron oxide nanoparticles used for contrast agents: a structural and magnetic study},
author = {Gamarra, Lionel Fernel and Brito, Giancarlo Espósito de Souza and Pontuschka, Walter Maigon and Amaro, E and Parma, A H C and Goya, Gerardo Fabían},
year = {2005},
doi = {10.1016/j.jmmm.2004.11.123},
journal   = {Journal of Magnetism and Magnetic Materials}
}