Carlo Zaniolo. Key Constraints and Monotonic Aggregates in Deductive Databases. In Antonis C. Kakas, Fariba Sadri, editors, Computational Logic: Logic Programming and Beyond, Essays in Honour of Robert A. Kowalski, Part II. Volume 2408 of Lecture Notes in Computer Science, pages 109-134, Springer, 2002. [doi]
Abstract is missing.