%0 Journal Article %A Guglieri C. %A Céspedes E. %A Espinosa, Ana %A Laguna-Marco M.A. %A Carmona N. %A Takeda Y. %A Okane T. %A Nakamura T. %A García-Hernández M. %A García M.A. %A Chaboy J. %T Evidence of oxygen ferromagnetism in ZnO based materials %D 2014 %U http://hdl.handle.net/20.500.12614/2379 %~