@InProceedings{Straccia04,
author = "Straccia, Umberto",
title =        "Uncertainty in Description Logics: a Lattice-based Approach", 
booktitle =    "Proceedings of the 10th International Conference on Information Processing 
and Managment of Uncertainty in Knowledge-Based Systems, (IPMU-04)", 
year =         "2004", 
pages = "251--258" 
}