Catriel Beeri Yoram Kornatzky The Many Faces of Query Monotonicity. 120-135 EDBT90/P120.pdf conf/edbt/90 1990 EDBT db/conf/edbt/edbt90.html#BeeriK90 http://dx.doi.org/10.1007/BFb0022167 journals/vldb/AbiteboulB95 conf/dbpl/AbiteboulG87 conf/popl/AhoU79 journals/jlp/Ait-KaciN86 books/mk/minker88/AptBW88 journals/jacm/AptE82 conf/pods/BancilhonK86 conf/vldb/BancilhonRS82 conf/pods/BeeriNRST87 journals/jcss/ChandraH82 journals/jcss/ChandraH80 conf/sigmod/DadamKABEGLPW86 journals/jlp/Fitting87 conf/sigmod/GyssensG88 conf/pods/HullS88 conf/pods/HullS89 conf/pods/KiferW89 conf/pods/Kuper87 conf/pods/Kuper88 conf/icdt/KuperV88 conf/icde/Linnemann87 conf/sigmod/PaulSSWD87 journals/jacm/SagivY80 journals/is/SchekS86 ... books/cs/Ullman88