conf/vldb/86 Shalom Tsur Carlo Zaniolo LDL: A Logic-Based Data Language. 33-41 1986 VLDB db/conf/vldb/vldb86.html#TsurZ86 http://www.vldb.org/conf/1986/P033.PDF journals/jlp/Ait-KaciN86 ... conf/pods/BancilhonMSU86 conf/pods/BancilhonK86 conf/sigmod/Bocca86 ... ... conf/sigmod/DadamKABEGLPW86 ... ... journals/csur/GallaireMN84 ... conf/sigmod/JarkeCV84 conf/vldb/KelloggOT86 ... journals/cacm/Kowalski79 ... conf/iclp/MorrisUG86 books/sp/Lloyd84 conf/slp/Naish85 ... conf/eds/ParkerCGJSW84 ... conf/vldb/RamakrishnanS85 journals/tods/SmithS77 journals/jacm/Stickel81 journals/tods/Ullman85 conf/vldb/Zaniolo85 conf/eds/Zaniolo84 conf/eds/Zaniolo86