Mechanism of grain-boundary magnetoresistance in Fe3O4 filmsM. Ziese, R. Höhne, H. C. Semmelhack, H. Reckentin, N. H. Hong and P. EsquinaziEur. Phys. J. B, 28 4 (2002) 415-422DOI: https://doi.org/10.1140/epjb/e2002-00245-3