Indexing Structures Derived from Syntax in TREC-3: System Description. - Alan F. Smeaton; Ruairi O'Donnell; Fergus Kelledy (TREC, 1994)

TREC-4 Experiments at Dublin City University: Thresholding Posting Lists, Query Expansion with WordNet and POS Tagging of Spanish. - Alan F. Smeaton; Fergus Kelledy; Ruairi O'Donnell (TREC, 1995)

A Word Stemming Algorithm for the Spanish Language. - Asunción Honrado; Ruben Leon; Ruairi O'Donnell; Duncan Sinclair (SPIRE, 2000)

The integration of information retrieval techniques within a software reuse environment. - Forbes Gibb; Colm McCartan; Ruairi O'Donnell; Niall Sweeney; Ruben Leon (J. Inf. Sci., 2000)