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.
Reiner W. Hartenstein, Karin Lemmert, Michael Riedmüller. 3 system. Journal of Systems Architecture, 27(1-5):479-486, 1989. [doi]
Abstract is missing.