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.
C. J. van Rijsbergen. A New Theoretical Framework for Information Retrieval. SIGIR Forum, 21(1-2):23-29, 1987. [doi]
Abstract is missing.