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.
Effie Lai-Chong Law, Borka Jerman-Blazic, Matic Pipan. Analyses of user rationality and system learnability: performing task variants in user tests. Behaviour & IT, 26(5):421-436, 2007. [doi]
Abstract is missing.