@article{escidoc:0225, title = {{Grain boundaries as the controlling factor for the ferromagnetic behaviour of Co-doped ZnO}}, author = {Straumal, B. B. and Mazilkin, A. A. and Protasova, S. G. and Straumal, P. B. and Myatiev, A. A. and Sch\"utz, G. and Goering, E. J. and Tietze, T. and Baretzky, B.}, journal = {{Philosophical Magazine}}, volume = {93}, number = {10-12}, pages = {1371--1383}, year = {2013}, doi = {10.1080/14786435.2012.736693; 10.1080/14786435.2012.736693} }