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2. From OOA to GUIs: The JANUS System;Balzert;Journal of Object-Oriented Programming,1996
3. A Pattern Approach to Interaction Design;Borchers,2001
4. Reusable Structures in Task Models;Breedvelt,1997
5. User Interface Declarative Models and Development Environments: A Survey in DSV-IS’2000;da Silva,2000