Udo Arend. Analysing complex tasks with an extended GOMS model. In Michael J. Tauber, David Ackermann, editors, Mental Models and Human-Computer Interaction 2 [selected papers of the 8th Interdisciplinary Workshop in Informatics and Psychology, Schärding, Austria, June 1989]. pages 115-133, North-Holland, 1989.
Abstract is missing.