Cacace, F.; Ceri, S.; Crespi-­Reghizi, S.; Tanca, L. and R. Zicari. "Integrating object­ oriented data modeling with a rule-­based programming paradigm" pp225-236

[ACM] (1990) Proceedings of the 1990 ACM SIGMOD International Conference on Management of Data, Atlantic City, NJ, May 23­25 1990  

Languages mentioned Logres {1990}