conf/vldb/90 Alfons Kemper Guido Moerkotte Advanced Query Processing in Object Bases Using Access Support Relations. 290-301 1990 VLDB db/conf/vldb/vldb90.html#KemperM90 db/conf/vldb/KemperM90.html VLDB90/P290.PDF journals/tkde/BertinoK89 journals/debu/CareyD87 conf/sigmod/CareyDV88 conf/vldb/ChakravarthyM86 conf/sigmod/Freytag87 conf/sigmod/GraefeD87 journals/jacm/Huet80 journals/csur/JarkeK84 conf/edbt/JenqWKL90 conf/sigmod/KemperM90 ... conf/er/KimKWD88 ... conf/sigmod/Lohman88 conf/oodbs/MaierS86 conf/sigmod/SelingerACLP79 journals/tods/Valduriez87