TY  - DATA
AU  - Bernhard Thalheim, Leonid Libkin
TI  - Semantics in Databases
SN  - 9783540697008
PY  - 1998///
PB  - Springer Berlin Heidelberg
KW  - Computer Science
UR  - https://doi.org/10.1007/BFb0035002
ER  -