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.
David B. Posner, Robert W. Robinson. Degrees Joining to 0?. Journal of Symbolic Logic, 46(4):714-722, 1981.
Abstract is missing.