TY  - BOOK
AU  - Demetrovics J Ed.
AU  -  Thalheim B Ed.
ED  - Symposium on mathematical fundamentals of database systems (2 : 1989 : Visegrad Hungary)
TI  - Proceeding on mathematical fundamentals of database systems
T2  - Lecture notes on computer science; 364
U1  - D65,8(B):3p1,N89, M9 
PY  - 1989///
CY  - Berlin
PB  - Springer-Verlag       
KW  - Database
ER  -