Joaquim Ferreira da Silva João Mexia Carlos Agra Coelho José Gabriel Pereira Lopes Document Clustering and Cluster Topic Extraction in Multilingual Corpora. 513-520 2001 conf/icdm/2001 ICDM http://doi.ieeecomputersociety.org/10.1109/ICDM.2001.989559 db/conf/icdm/icdm2001.html#SilvaMCL01