Ferrite nanoparticles Ni- ZnFe2O4 , Mn- ZnFe2O4 and Fe2O4 in the flow of ferromagnetic nanofluid Noor Muhammad and Sohail Nadeem Eur. Phys. J. Plus, 132 9 (2017) 377 Published online: 05 September 2017 DOI: 10.1140/epjp/i2017-11650-2