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.
Julian R. Ullmann. An Algorithm for Subgraph Isomorphism. Journal of the ACM, 23(1):31-42, 1976. [doi]
Abstract is missing.