Online Supplement for An Arabic Version of The Visual Aesthetics of Websites Inventory (AR-VisAWI): Translation and Psychometric Properties
A. Abbas, G. Hirschfeld, M. T. Thielsch, Online Supplement for An Arabic Version of The Visual Aesthetics of Websites Inventory (AR-VisAWI): Translation and Psychometric Properties, FH Bielefeld, 2022.

Establishing meaningful cut points for online user ratings
G. Hirschfeld, M. Thielsch, Ergonomics 58 (2015) 310–320.

Expected usability is not a valid indicator of experienced usability
M.T. Thielsch, R. Engel, G. Hirschfeld, PeerJ Computer Science 1 (2015) 1–19.