Evaluation of digital libraries.
Norbert FuhrGiannis TsakonasTrond AalbergMaristella AgostiPreben HansenSarantos KapidakisClaus-Peter KlasLászló KovácsMonica LandoniAndrás MicsikChristos PapatheodorouCarol PetersIngeborg SølvbergPublished in: Int. J. Digit. Libr. (2007)