Location-based services - the market: success factors and emerging trends from an exploratory approach. - Perole Uphaus; Björn Beringer; Kristoph Siemens; Annika Ehlers; Harald Rau (J. Locat. Based Serv., 2021)

From Digital Subcultures to Destination Tourism: Profiling Attendees at Multi Genre Festivals. - Brian McCauley; Annika Ehlers; Foula Kopanidis; Miralem Helmefalk (HICSS, 2023)