Always-on information: services and applications on the mobile desktop. - Arjan Geven; Reinhard Sefelin; Norman Höller; Manfred Tscheligi; Markus Mayer (Mobile HCI, 2008)

The Perception of Information and Advertisement Screens Mounted in Public Transportation Vehicles. - Norman Höller; Johann Schrammel; Manfred Tscheligi; Lucas Paletta (GI Jahrestagung, 2009)

Exploring the urban environment with a camera phone: lessons from a user study. - Norman Höller; Arjan Geven; Manfred Tscheligi; Lucas Paletta; Katrin Amlacher; Patrick Morris Luley; Dusan Omercevic (Mobile HCI, 2009)

User requirement analysis for a railway ticketing portal with emphasis on semantic accessibility for older users. - Michael Leitner; Özge Subasi; Norman Höller; Arjan Geven; Manfred Tscheligi (W4A, 2009)

Designing accessible experiences for older users: user requirement analysis for a railway ticketing portal. - Özge Subasi; Michael Leitner; Norman Höller; Arjan Geven; Manfred Tscheligi (Univers. Access Inf. Soc., 2011)