@Inproceedings{PozzatoEtAl,
    author = {Laura Giordano and Valentina Gliozzi and Nicola Olivetti and Gian Luca Pozzato},
    title  ={Preferential Extensions of Lightweight Description Logics},
    year = {2009},
    editor = {Marco Gavanelli and Toni Mancini},
    booktitle = {R.i.C.e.R.c.A. 2009: RCRA Incontri E Confronti},
}