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.
Pertti Vakkari, Eero Sormunen. The influence of relevance levels on the effectiveness of interactive information retrieval. JASIS, 55(11):963-969, 2004. [doi]
Abstract is missing.