TY  - DATA
AU  - Gösta Grahne
TI  - The Problem of Incomplete Information in Relational Databases
SN  - 9783540465072
PY  - 1991///
PB  - Springer Berlin Heidelberg
KW  - Computer Science
UR  - https://doi.org/10.1007/3-540-54919-6
ER  -