@article{escidoc:0456, title = {{The hole is important! The quest for ferromagnetism in doped ZnO}}, author = {Tietze, T. and Gacic, M. and Sch\"utz, G. and Jakob, G. and Br\"uck, S. and Goering, E.}, journal = {{BESSY Highlights 2007}}, pages = {14--15}, year = {2008}, doi = {} }