UFRGS@CLEF2008: Indexing Multiword Expressions for Information Retrieval. - Otávio Costa Acosta; André Pinto Geraldo; Viviane Moreira Orengo; Aline Villavicencio (CLEF (Working Notes), 2008)

UFRGS@CLEF2008: Using Association Rules for Cross-Language Information Retrieval. - André Pinto Geraldo; Viviane Pereira Moreira (CLEF, 2008)

BBK-UFRGS@CLEF2009: Query Expansion of Geographic Place Names. - Richard Flemmings; Joana Barros; André Pinto Geraldo; Viviane Pereira Moreira (CLEF (Working Notes), 2009)

On-Demand Associative Cross-Language Information Retrieval. - André Pinto Geraldo; Viviane Pereira Moreira; Marcos André Gonçalves (SPIRE, 2009)