(1) LZ Digital user survey 2024, target group retail, Karwath Marktforschung, Oldendorf
(2) LZ Digital user survey 2024, target group retail, Karwath Marktforschung, Oldendorf.
(3) Piwik PRO, evaluation of visitors per week, 01.01.2024 - 30.08.2024
(4) IVW, December 2024