The Usability Stack: Reconsidering Usability Criteria regarding Knowledge-Based Systems.
M. Freiberg, J. Baumeister, и F. Puppe. LWA, TUD-CS-2009-0157/TUD-KE-2009-04, стр. FGWM:1-9. FG Telekooperation/FG Knowledge Engineering, Technische Universität Darmstadt, Germany, (2009)