13.		Information technology : cabling installation: part 2: installation planning and practices inside buildings: DRAFT pr EN 50174-2: June 1998 / European Commitee for Electrothecnical Standardization Data Publicação: 1998 Tema: Normas
14.		Legal regulation of telecommunications and information technology / Communication Authority Data Publicação: 1998 Tema: Vária
15.		Study of networks and services : a vision for the portuguese telecommunications industry in the 21st century / Arthur D. Little Data Publicação: 1998 Tema: Comunicações Eletrónicas