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.
Ines Lindner, Guillermo Owen. Cases where the Penrose limit theorem does not hold. Mathematical Social Sciences, 53(3):232-238, 2007. [doi]
Abstract is missing.