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.
Ulrich Faigle. Exchange properties of combinatorial closure spaces. Discrete Applied Mathematics, 15(2-3):249-260, 1986. [doi]
Abstract is missing.