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.
Ravi Mukkamala, Sushil Jajodia. A Note on Estimating the Cardinality of the Projection of a Database Relation. ACM Trans. Database Syst., 16(3):564-566, 1991. [doi]