Serge Abiteboul Cassio Souza dos Santos IQL(2): A Model with Ubiquitous Objects. 10 1995 DBPL db/conf/dbpl/dbpl95.html#AbiteboulS95 conf/dbpl/95 db/conf/dbpl/AbiteboulS95.html DBPL1995/X19.pdf journals/debu/AbiteboulK91 books/mk/bancilhonDK92/AbiteboulKW92 conf/sigmod/AbiteboulK89 conf/vldb/AlbanoBGO93 conf/oopsla/AmielGS94 conf/vldb/BachmanD77 books/mk/BancilhonDK92 conf/vldb/KimC88 journals/tods/RabittiBKW91 conf/sigmod/RichardsonS91 conf/edbt/SantosAD94 conf/vldb/Su91 books/mk/bancilhonDK92/Zicari92