conf/pods/82 Nicolas Spyratos An Operational Approach to Data Bases. 212-220 1982 PODS db/conf/pods/pods82.html#Spyratos82 http://doi.acm.org/10.1145/588111.588147 db/conf/pods/Spyratos82.html journals/anthology/cd1-3:PODS82/P212.PDF journals/anthology/dvd1:text/1-3/PODS82/P212.PDF conf/ifip/Armstrong74 journals/tods/BancilhonS81 conf/vldb/BancilhonS81 conf/vldb/BeeriBG78 conf/stoc/BeeriMSU79 persons/Codd71a conf/vldb/DayalB78 journals/tods/Fagin77 journals/tods/Rissanen77 conf/vldb/Spyratos80 ... ... conf/focs/YannakakisP80