Relatório [da] conferência "VDSL the way to net generation acess networks" : International maritim hotel Konigswinter 2017 / Autoridade Nacional de Comunicações
[relatório do] Public utility research center : warrington college of business administration University of Florida / ANACOM
EN 188000 : generic specification: optical fibres: December 1992 / European Commitee for Electrothecnical Standardization
EN 188100 : April 1995: sectional specification: single-mode (SM) optical fibre / European Commitee for Electrothecnical Standardization