Bernhard Thalheim Fundamentals of Cardinality Constraints. 7-23 1992 ER db/conf/er/er92.html#Thalheim92 conf/er/92 er92/ER92-P007.pdf db/conf/er/Thalheim92.html books/bc/BatiniCN92 conf/edbt/BunemanDK92 journals/jcss/CasanovaFP84 journals/tods/Chen76 ... books/bc/ElmasriN89 conf/er/Ferg91 journals/tcs/GrantM85 conf/stoc/KanellakisCV83 ... journals/is/LenzeriniN90 journals/iandc/Mitchell83 ... ... conf/fmldo/ScheweTSW92 ... conf/mfdbs/Thalheim89 ... ... ... ... ... ... books/aw/Vossen90 conf/er/ZhuNGDA90