"Jahresbericht 2016" [Annual Report 2016] (PDF). rundfunkbeitrag.de (in German). Archived from the original(PDF) on 14 February 2018. Retrieved 26 April 2018.
"Jahresbericht 2016" [Annual Report 2016] (PDF). rundfunkbeitrag.de (in German). Archived from the original(PDF) on 14 February 2018. Retrieved 26 April 2018.