conf/vldb/94 Christoph Kilger Guido Moerkotte Indexing Multiple Sets. 180-191 1994 VLDB db/conf/vldb/vldb94.html#KilgerM94 db/conf/vldb/vldb94-180.html VLDB94/P180.PDF journals/acta/BayerM72 conf/vldb/CareyDRS86 conf/sigmod/CluetD92 journals/tods/Harder78 books/ph/KemperM94 ... ... conf/dood/LowLOH91 conf/sigmod/LowOL92 journals/tods/NievergeltHS84 conf/vldb/SeegerK90 journals/tods/Valduriez87