@Inproceedings{stojanovic2004alafqrioirs, author = "Nenad Stojanovic and Ljiljana Stojanovic", booktitle = "IEEE International Conference on Data Mining ICDM 2004", month = "November", pages = "350-356", publisher = "IEEE", title = "A Logic-based Approach for Query Refinement in Ontology-based Information Retrieval Systems", year = "2004", }