TY  - BOOK
AU  - Demetrovics, J. Ed.
AU  - Thalheim, B. Ed.
TI  - MFDBS 89 - Mathematical Fundamentals of Database Systems: Proceedings, 2nd Symposium, Visegrad, Hungary,1989
SN  - 3540512519
CY  - Berlin
KW  - Mathematical Fundamentals
KW  - Database Systems
ER  -