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.
Giacomo Lenzi. About a Positive Set Theory With Equality. Electronic Notes in Theoretical Computer Science, 169:111-120, 2007. [doi]
Abstract is missing.