1. Beyond the interface: encountering artifacts in use;Bannon,1991
2. The task as a basic object of study in HCI systems;Bedny,2005
3. The systemic-structural theory of activity: applications to the study of human work;Bedny;Mind, Culture and Activity,2005
4. A Systemic-Structural Theory of Activity Application to Human Performance and Work Design;Bedny,2006
5. A systemic-structural activity approach to the design of human–computer interaction tasks;Bedny;International Journal of Human Computer Interaction,2003