Manual para a gestão de documentos / Instituto dos Arquivos Nacionais - Torre do Tombo; coord. Madalena Garcia, Maria João Pires de Lima; elab. Cecília Henriques, Francisco Barbedo e Luís Montalvão
Next generation call centres: CTI, voice and the web / David Bradshaw, Stephen Wood and John Delaney
Implementing cost-based interconnection / David Rogerson...[et. al]
Capitalising on the commercial opportunities for wireless local loop / org. Institute for International Research