conf/pods/82 Marc H. Graham Mihalis Yannakakis 199-204 1982 PODS db/conf/pods/pods82.html#GrahamY82 http://doi.acm.org/10.1145/588111.588144 db/conf/pods/GrahamY82.html journals/anthology/cd1-3:PODS82/P199.PDF journals/anthology/dvd1:text/1-3/PODS82/P199.PDF conf/ifip/Armstrong74 journals/tods/AhoBU79 conf/vldb/BeeriBG78 conf/stoc/BeeriFMMUY81 journals/siamcomp/BeeriH81 ... journals/tods/FaginMU82 ... journals/jacm/Honeyman82 journals/tods/Mendelzon84 conf/sigmod/Sagiv81 journals/tods/Sagiv83 ... conf/vldb/Yannakakis81