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.
Manfred Broy, Eva Geisberger, Jürgen Kazmeier, Arnold Rudorfer, Klaus Beetz. Ein Requirements-Engineering-Referenzmodell. Informatik Spektrum, 30(3):127-142, 2007. [doi]
Abstract is missing.