Serge Abiteboul Stéphane Grumbach COL: A Logic-Based Language for Complex Objects. 271-293 1988 conf/edbt/88 EDBT db/conf/edbt/edbt88.html#AbiteboulG88 http://dx.doi.org/10.1007/3-540-19074-0_58 EDBT88/P271.pdf journals/vldb/AbiteboulB95 journals/jcss/AbiteboulB86 ... conf/pods/AbiteboulH84 journals/tcs/AbiteboulH88 ... books/mk/minker88/AptBW88 conf/sigmod/BancilhonR86 conf/pods/BancilhonMSU86 conf/pods/BancilhonK86 conf/pods/BeeriNRST87 conf/pods/BidoitH86 conf/sigmod/BunemanF79 ... ... conf/sigmod/GardarinM86 books/mk/minker88/Gelder88 journals/tods/HammerM81 journals/csur/HullK87 journals/jacm/HullY84 journals/jacm/Jacobs82 conf/pods/JaeschkeS82 conf/pods/Kuper87 conf/pods/KuperV84 books/sp/Lloyd84 ... ... ... ... ... journals/is/SchekS86 ... journals/tods/Shipman81 ...