1. ECM: A scheme for analyzing user-system errors;Booth,1990
2. A methodology and encoding scheme for evaluating the usability of graphical direct manipulation style interfaces;Cuomo,1993
3. Understanding the applicability of sequential data analysis techniques for analyzing usability data;Cuomo;Behav. Inf. Technol.,1994
4. Measures of user-system interface effectiveness: an encoding scheme and indicators for assessing the usability of graphical, directmanipulation style user interfaces;Cuomo,1992
5. Direct manipulation interfaces;Hutchins,1986