@inproceedings{AIMSA-2010,
   title = {Expressive Approximations in DL-Lite  Ontologies},
   year = {2010},
   author = {Elena Botoeva and Diego Calvanese and Mariano Rodriguez-Muro},
   booktitle = {Proc. of the 14th Int. Conf. on Artificial Intelligence:
		  Methodology, Systems, Applications (AIMSA 2010)},
   pages = {21-31},
   volume = {6304},
   publisher = {Springer},
   series = {Lecture Notes in Computer Science}
}