Researchr is a web site for finding, collecting, sharing, and reviewing scientific publications, for researchers by researchers.
Sign up for an account to create a profile with publication list, tag and review your related work, and share bibliographies with your co-authors.
Harold W. Thimbleby. Permissive user interfaces. International Journal of Man-Machine Studies, 54(3):333-350, 2001. [doi]
Abstract is missing.