ARIADNE - Digital Library Architecture. - Nuno Maria; Pedro Gaspar; Nuno Grilo; António Ferreira; Mário J. Silva (ECDL, 1998)

Building a Digital Library of Web News. - Nuno Maria; Mário J. Silva (ECDL, 2000)

Theme-based Retrieval of Web News. - Nuno Maria; Mário J. Silva (WebDB (Selected Papers), 2000)