TY  - BOOK
AU  - Blaser A
ED  - International Conference on Data systems of the 90s( 1990 : Berlin )
ED  - International Conference on Data systems of the 90s
TI  - Data systems of the 90s : proceedings
SN  - 3-540-53397-4
U1  - 5.74 
PY  - 1990///
CY  - Berlin
PB  - Springer Verlag
KW  - Data base systems
ER  -