The study was in german, but here are informations about the study company: http://www.planung-analyse.de/services/puahandbuch/pages/forschungsinstitut-gfk-firmenprofil-115
The study was in german, but here are informations about the study company: http://www.planung-analyse.de/services/puahandbuch/pages/forschungsinstitut-gfk-firmenprofil-115
Thanks :-)