EDBL: a multi-purposed lexical support for treatment of Basque. - Itziar Aduriz; Izaskun Aldezabal; Olatz Ansa; Xabier Artola-Zubillaga; Arantza Díaz de Ilarraza Sánchez; J. M. Insausti (LREC, 1998)

Designing spelling correctors for inflected languages using lexical transducers. - Izaskun Aldezabal; Iñaki Alegria; Olatz Ansa; Jose Maria Arriola; Nerea Ezeiza (EACL, 1999)

Enriching very large ontologies using the WWW. - Eneko Agirre; Olatz Ansa; Eduard H. Hovy; David Martínez 001 (ECAI Workshop on Ontology Learning, 2000)

Extraction of semantic relations from a Basque monolingual dictionary using Constraint Grammar - Eneko Agirre; Olatz Ansa; Xabier Arregi; Xabier Artola; Arantza Díaz de Ilarraza Sánchez; Mikel Lersundi; David Martínez 001; Kepa Sarasola; Ruben Urizar (CoRR, 2000)

Enriching WordNet concepts with topic signatures - Eneko Agirre; Olatz Ansa; Eduard H. Hovy; David Martínez 001 (CoRR, 2001)

Un entorno para el desarrollo y la evaluación de un sistema de búsqueda de respuestas en euskara. - Olatz Ansa; Xabier Arregi; Itsaso Esparza; Andoni Valverde (Proces. del Leng. Natural, 2005)

An XML Framework for a Basque Question Answering System. - Olatz Ansa; Xabier Arregi; Arantxa Otegi; Andoni Valverde (FQAS, 2006)

Ihardetsi: A Basque Question Answering System at QA@CLEF 2008. - Olatz Ansa; Xabier Arregi; Arantxa Otegi; Ander Soraluze (CLEF, 2008)

Ihardetsi Question Answering System at QA@CLEF 2008. - Olatz Ansa; Xabier Arregi; Arantxa Otegi; Ander Soraluze (CLEF (Working Notes), 2008)

Elhuyar-IXA: Semantic Relatedness and Cross-lingual Passage Retrieval. - Eneko Agirre; Olatz Ansa; Xabier Arregi; Maddalen Lopez de Lacalle; Arantxa Otegi; Xabier Saralegi; Hugo Zaragoza (CLEF (Working Notes), 2009)

Document Expansion for Cross-Lingual Passage Retrieval. - Eneko Agirre; Olatz Ansa; Xabier Arregi; Maddalen Lopez de Lacalle; Arantxa Otegi; Xabier Saralegi (CLEF (Notebook Papers/LABs/Workshops), 2010)

Recognition and Classification of Numerical Entities in Basque. - Ander Soraluze; Iñaki Alegria; Olatz Ansa; Olatz Arregi; Xabier Arregi (RANLP, 2011)

Using knowledge-based relatedness for information retrieval. - Arantxa Otegi; Xabier Arregi; Olatz Ansa; Eneko Agirre (Knowl. Inf. Syst., 2015)