@ARTICLE {2394,
author={P.S André and L. Costa    },
doi={10.1002/mop.22402},
journal={Microwave and Optical Tech. Letters},
title={Microwave Dielectric Properties of NiFe2O4 Nanoparticles Ferrites},
year={2007},
month={March},
volume={49},
number={6},
pages={1341-1344},
ISSN={0895-2477}
}