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.
J. Albert, Karel Culik II. Test Sets for Homomorphism Equivalence on Context Free Languages. Inf. Comput., 45(3):273-284, June 1980.
Abstract is missing.