Rossmann, AlexanderAlexanderRossmann2023-04-132023-04-132013-07-01https://www.alexandria.unisg.ch/handle/20.500.14171/8902010.1365/s11621-013-0237-7deSocial MediaMarketingKundenserviceTelekom hilft - Kundenservice via Social Mediajournal article