Ana Cristina Mendes Luísa Coheur Nuno J. Mamede Ricardo Ribeiro 0001 Fernando Batista David Martins de Matos QA@L2F, First Steps at QA@CLEF. 356-363 2007 CLEF http://dx.doi.org/10.1007/978-3-540-85760-0_45 conf/clef/2007 db/conf/clef/clef2007.html#MendesCMRBM07