Hugo Gonçalo Oliveira Diana Santos Paulo Gomes Nuno Seco PAPEL: A Dictionary-Based Lexical Ontology for Portuguese. 31-40 2008 PROPOR http://dx.doi.org/10.1007/978-3-540-85980-2_4 conf/propor/2008 db/conf/propor/propor2008.html#OliveiraSGS08