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.
Vijay Varadharajan. A mathematical model for system design and refinement. Int. J. Comput. Math., 34(1-2):13-31, 1990. [doi]
Abstract is missing.