Michael Gelfond, Halina Przymusinska, Teodor C. Przymusinski. The Extended Closed World Assumpution and its Relationship to Parallel Circumscription. In Proceedings of the Fifth ACM SIGACT-SIGMOD Symposium on Principles of Database Systems, March 24-26, 1986, Cambridge, Massachusetts. pages 133-139, ACM, 1986. [doi]
Abstract is missing.