@book{baader03dlhandbook, title = {The Description Logic Handbook: Theory, Implementation and Applications}, address = {Cambridge, UK}, editor = {Franz Baader and Diego Calvanese and Deborah McGuinness and Daniele Nardi and Peter Patel-Schneider}, publisher = {Cambridge University Press}, year = {2003}, biburl = {http://www.bibsonomy.org/bibtex/23566065693f7ae313f82f9b2a0c96936/sb3000}, keywords = {DL } }