Automatic Operation Logging and Usability Validation. - Avi Harel (HCI (1), 1999)

Decision Support for User Interface Design: Usability Diagnosis by Time Analysis of the User Activity. - Avi Harel; Ron S. Kenett; Fabrizio Ruggeri 001 (COMPSAC, 2008)

Controlling the Usability of Web Services. - Ron S. Kenett; Avi Harel; Fabrizio Ruggeri 001 (Int. J. Softw. Eng. Knowl. Eng., 2009)