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.
Manuel Lerman. Congruence Relations, Filters, Ideals, and Definability in Lattices of alpha-Recursively Enumerable Sets. Journal of Symbolic Logic, 41(2):405-418, 1976.
Abstract is missing.