Hecken, Thomas2018-10-092018-10-092015https://www.uni-muenster.de/Ejournals/index.php/pop/article/view/1583/1480https://mediarep.org/handle/doc/3762deuWerbungWareMarketingOnlinehandel30010.25969/mediarep/691nbn:de:hbz:6:3-pop-2015-148092198-0322