Norman W. Paton Oscar Díaz Introduction Active Rules in Database Systems Springer, New York 1999 3-27 db/books/collections/patton99.html#PattonD99 conf/rules/BrandingBKZ93 conf/dexa/BlancoIPG92 books/mk/widomC96/CeriFPT96 conf/vldb/ChakravarthyKAK94 conf/oodbs/DayalBM88 conf/rules/DittrichGG95 conf/rules/FernandezD95 conf/rules/GatziuD93 conf/sigmod/GehaniJS92 conf/sigmod/Hanson92 ... conf/rules/NaqviI93 ... conf/rules/PatonDWCDJ93 conf/sigmod/StonebrakerJGP90 books/mk/WidomC96 ...