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.
Christof Ebert. Understanding the product life cycle: four key requirements engineering techniques. IEEE Software, 23(3):19-25, 2006. [doi]
Abstract is missing.