%0 Book
%A J. Demetrovics, B. Thalheim, eds
%T MFDBS'89 : 2nd Symposium on Mathematical Fundamentals of Database Systems, Visegrad, Hungary, June 26-30, 1989 : Proceedings
%U /book/101373398/MFDBS89-2nd-Symposium-on-Mathematical-Fundament/