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.
Oded Shmueli, Alon Itai. Complexity of Views: Tree and Cyclic Schemas. SIAM Journal on Computing, 16(1):17-37, 1987.
Abstract is missing.