An Economical Approach to Usability Testing. - Carl J. Mueller; Dan E. Tamir; Oleg V. Komogortsev; Liam Feldman (COMPSAC (1), 2009)

Usability testing with total-effort metrics. - Liam Feldman; Carl J. Mueller; Dan E. Tamir; Oleg V. Komogortsev (ESEM, 2009)

Using Designers Effort for User Interface Evaluation. - Carl J. Mueller; Dan E. Tamir; Oleg V. Komogortsev; Liam Feldman (SMC, 2009)