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.
Tran Quoc Chien. Unification of the abstract duality scheme. Kybernetika, 23(5):365-369, 1987. [doi]