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Gamarra L.F, Amaro E., Alves S., Soga D., Pontuschka W.M, Mamani J.B, Carneiro S.M, Brito G.ES, Neto A.MFigueir.  2010.  Characterization of the Biocompatible Magnetic Colloid on the Basis of Fe₃O₄ Nanoparticles Coated with Dextran, Used as Contrast Agent in Magnetic Resonance Imaging. Journal of Nanoscience and Nanotechnology. 10(7):4145-4153.