1. Mobile application to provide personalized sightseeing tours
2. H Anegg and M Umlauft. 2003. LoL@: usability of a location based UMTS application. e & i Elektrotechnik und Informationstechnik 120 2 (2003) 61--65. H Anegg and M Umlauft. 2003. LoL@: usability of a location based UMTS application. e & i Elektrotechnik und Informationstechnik 120 2 (2003) 61--65.
3. John Brooke. 2009. SUS - A quick and dirty usability scale. Usability evaluation in industry 189 194 (2009) 4--7. John Brooke. 2009. SUS - A quick and dirty usability scale. Usability evaluation in industry 189 194 (2009) 4--7.
4. Flat vs. Deep Website Hierarchies 2018. Flat vs. Deep Website Hierarchies. https://www.nngroup.com/articles/flat-vs-deep-hierarchy/. Flat vs. Deep Website Hierarchies 2018. Flat vs. Deep Website Hierarchies. https://www.nngroup.com/articles/flat-vs-deep-hierarchy/.
5. A web-based pervasive recommendation system for mobile tourist guides