February 2008 GfK GroupAd Hoc Research OHIM USER SATISFACTION SURVEY 2007 ER- 0484/1/00 OHIM USER SATISFACTION SURVEY 2007 February 2008.
January 2007 GfK GroupAd Hoc Research OHIM USER SATISFACTION SURVEY ER- 0484/1/00 2006 OHIM USER SATISFACTION SURVEY Executive summary January 2007.