@article{DBLP:journals/jair/CalvaneseLN99,
author = {Diego Calvanese and
Maurizio Lenzerini and
Daniele Nardi},
title = {Unifying Class-Based Representation Formalisms},
journal = {J. Artif. Intell. Res. (JAIR)},
volume = {11},
year = {1999},
pages = {199-240},
ee = {http://dx.doi.org/10.1613/jair.548},
bibsource = {DBLP, http://dblp.uni-trier.de}
}