Catriel Beeri, Tova Milo. On the Power of Algebras with Recursion. In Peter Buneman, Sushil Jajodia, editors, Proceedings of the 1993 ACM SIGMOD International Conference on Management of Data, Washington, D.C., May 26-28, 1993. pages 377-386, ACM Press, 1993. [doi]
Abstract is missing.