%0 Journal Article %A Ruiz A. %A Salas, Gorka %A Calero M. %A Hernández Y. %A Villanueva A. %A Herranz F. %A Veintemillas-Verdaguer S. %A Martínez E. %A Barber D.F. %A Morales M.P. %T Short-chain PEG molecules strongly bound to magnetic nanoparticle for MRI long circulating agents %D 2013 %U http://hdl.handle.net/20.500.12614/2115 %~