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.
Minoru Ito, Tadao Kasami. Optimizing universal queries in relational databases. Systems and Computers in Japan, 22(3):19-30, 1991. [doi]
Abstract is missing.