Individually Assisted Text Entry with Situational and Contextual Prediction. - Dirk Clemens; Helmut Heck; Michael Kühn; Olaf Perlick; Frank Reins (ICCHP, 2002)

Interpreting Results from Large Scale Automatic Evaluation of Web Accessibility. - Christian Bühler; Helmut Heck; Olaf Perlick; Annika Nietzio; Nils Ulltveit-Moe (ICCHP, 2006)