1. M.M. Astrahan, M.W. Blasgen, D.D. Chamberlin, K.P. Eswaran, J.N. Gray, P.P. Griffiths, W.F. King, R.A. Lorie, P.R. McJones, J.W. Mehl, G.R. Putzolu, I.L. Traiger, B.W. Wade, and V. Watson. System R: Relational Approach to Database Management. ACM Transactions on Database Systems, 1(2):97–137, June 1976.
2. C.L. Forgy. OPS5 User’s Manual. Technical Report CMU-CS-81-135, Carnegie-Mellon University, Pittsburgh, PA 15213, July 1981.
3. C. L. Forgy. Rete: A Fast Algorithm for the Many Pattern/Many Object Pattern Match Problem. Artificial Intelligence, 19:17–37, 1982.
4. E.N. Hanson. The Design and Implementation of the Ariel Active Database Rule System. IEEE Transactions on Knowledge and Data Engineering, 8(1):157–172, February 1996.
5. E.N. Hanson, S. Bodagala, M. Hasan, G. Kulkarni, and J. Rangarajan. Optimized Rule Condition Testing in Ariel Using Gator Betworks. Technical Report TR-95-027, University of Florida CIS Dept., October 1995.
http://www.cis.ufl.edu/cis/tech-reports/
.