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.
Perdita Löhr-Richter. Überlegungen zur Validation von Datenbankspezifikationen. In Grundlagen von Datenbanken. pages 62-63, 1990.