Costa, LuísPeters, Carol2009-11-032009-11-032006-02-282005Luís Costa. "20 th Century Esfinge (Sphinx) solving the riddles at CLEF 2005". In Carol Peters (ed.), Cross Language Evaluation Forum: Working Notes for the CLEF 2005 Workshop (CLEF 2005) (Vienna, Austria, 21-23 September 2005) , Wien, Österreich: Centromedia, s/pphttp://hdl.handle.net/10400.26/220http://www.linguateca.pt/superb/busca_publ.pl?idi=1141122339application/pdfapplication/pptengCLEFQACLEFESFINGEconference object