February 2008 GfK GroupAd Hoc Research OHIM USER SATISFACTION SURVEY 2007 ER- 0484/1/00 OHIM USER SATISFACTION SURVEY 2007 February 2008.
GfK Emer Ad Hoc Research OHIM USER SATISFACTION SURVEY 2008 Febrero 2009 OHIM User Satisfaction Survey 2008 February 2009 ER- 0484/1/00 A50/000021.