conf/sigmod/93 Mariano P. Consens Alberto O. Mendelzon Hy+: A Hygraph-based Query and Visualization System. 511-516 1993 SIGMOD Conference db/conf/sigmod/sigmod93.html#ConsensM93 http://doi.acm.org/10.1145/170035.171537 db/conf/sigmod/ConsensM93.html SIGMOD93/P511.PDF ... ... conf/ht/ConsensM89 conf/sigmod/ConsensM90 conf/pods/ConsensM90 conf/icdt/ConsensM90 ... ... ... ... ... journals/cacm/Harel88 books/cs/NaqviT89 conf/vldb/RamakrishnanSS92 journals/computer/Raymond92 journals/tois/Tompa89