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.
Klaus Ambos-Spies, André Nies. Cappable recursively enumerable degrees and Post's program. Arch. Math. Log., 32(1):51-56, 1992. [doi]
Abstract is missing.