TY  - BOOK
AU  - Harmelen, Frank Van, Lifschitz, Vladimir
AU  - Porter, Bruce Ed.
TI  - Handbook of knowledge representation
SN  - 9780444522115
U1  - 006.3 
PY  - 2008///
CY  - Amsterdam
PB  - Elsevier
KW  - Knowledge Representation (Information Theory). 2.Reasoning
ER  -