EN 50174-3:2013/A1 [documento eletrónico] : information technology; : cabling installation; : part 3; : installation planning and practices outside buildings; : amendment A1 / European Commitee for Electrothecnical Standardization
EN 50288-12-1 [documento eletrónico] : multi-element metallic cables use in analogue and digital communication and control - Part 12-1; : sectional specification for screened cables characterised from 1 MHz up to 2 000 MHz -horizontal and building backbone cables / European Commitee for Electrothecnical Standardization