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.
Nandish V. Patel. The Spiral of Change Model for Coping with Changing and Ongoing Requirements. Requir. Eng., 4(2):77-84, 1999. [doi]
Abstract is missing.