@inproceedings{NavigliVelardi:03,
  author = 	 {Roberto Navigli and Paola Velardi},
  title = 	 {An Analysis of Ontology-based Query Expansion Strategies},
  booktitle = {Proceedings of Workshop on Adaptive Text Extraction and Mining (ATEM) in the $14^{th}$ European Conference on Machine Learning (ECML)},
  year =	2003,
  address = {Cavtat-Dubrovnik, Croatia},
  pages = {42--49}
}