BIKA - Competence Center Barrier-Free Information and Communication Technologies for All. - Yehya Mohamad; Henrike Gappa; Gabriele Nordbrock; Dirk Stegemann; Carlos A. Velasco (HCI (4), 2003)

Preferences of People with Disabilities to Improve Information Presentation and Information Retrieval Inside Internet Services - Results of a User Study. - Henrike Gappa; Gabriele Nordbrock; Yehya Mohamad; Carlos A. Velasco (ICCHP, 2004)

Automatic Modification of Text for People with Learning Disabilities Using Internet Services. - Gabriele Nordbrock; Henrike Gappa; Yehya Mohamad; Carlos A. Velasco (ICCHP, 2004)

IPCA: Adaptive Interfaces Based upon Biofeedback Sensors. - Carlos A. Velasco; Yehya Mohamad; Dirk Stegemann; Henrike Gappa; Gaby Nordbrock; Erwin Hartsuiker; Javier Sánchez-Lacuesta; Juan Manuel Belda (ICCHP, 2004)

Applying Web accessibility to Internet portals. - Henrike Gappa; Gabriele Nordbrock (Univers. Access Inf. Soc., 2004)

The Usability of Accessibility Evaluation Tools. - Helen Petrie; Neil King; Carlos A. Velasco; Henrike Gappa; Gaby Nordbrock (HCI (7), 2007)

Accessibility of Internet Portals in Ambient Intelligent Scenarios: Re-thinking Their Design and Implementation. - Evangelos Vlachogiannis; Carlos A. Velasco; Henrike Gappa; Gabriele Nordbrock; Jenny S. Darzentas (HCI (6), 2007)

Controlled Natural Language Sentence Building as a Model for Designing User Interfaces for Rule Editing in Assisted Living Systems - A User Study. - Henrike Gappa; Gaby Nordbrock; Yehya Mohamad; Jaroslav Pullmann; Carlos A. Velasco (ICCHP (2), 2012)

Extended Scaffolding by Remote Collaborative Interaction to Support People with Dementia in Independent Living - A User Study. - Henrike Gappa; Gabriele Nordbrock; Manuela Thelen; Jaroslav Pullmann; Yehya Mohamad; Carlos A. Velasco (ICCHP (1), 2014)

Study on Elicitation and Detection of Emotional States with Disabled Users. - Yehya Mohamad; Gaby Nordbrock; Henrike Gappa; Carlos A. Velasco (ICCHP (1), 2016)

Group-Based Expert Walkthroughs to Compensate for Limited Access to Target User Groups as in Case of Chronically Ill Patients. - Henrike Gappa; Gaby Nordbrock; Yehya Mohamad; Carlos A. Velasco (ICCHP (1), 2018)

Evaluation of an Information System for Elderly with Chronic Diseases and for Their Caregiver. - Yehya Mohamad; Henrike Gappa; Gaby Nordbrock; Carlos A. Velasco (ICCHP (2), 2018)