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.
Zygmunt Ratajczyk. PA. Math. Log. Q., 28(8-12):149-165, 1982. [doi]
Abstract is missing.