Study of the magnetorheology of aqueous suspensions of extremely bimodal magnetite particles J. L. Viota, J. D. G. Durán and A. V. Delgado Eur. Phys. J. E, 29 1 (2009) 87-94 Published online: 10 May 2009 DOI: 10.1140/epje/i2009-10453-3