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.
Marcelo Arenas, Leonid Libkin. XML data exchange: Consistency and query answering. Journal of the ACM, 55(2), 2008. [doi]
Abstract is missing.