Conduit systems for electrical installations : part 2-1: particular requirements for rigid conduit systems: EN 50086 -2-1/A11: December 1998 / European Commitee for Electrothecnical Standardization
EN 55013 prA14 : December 1996: limits and methods of measurement of radio disturbance characteristics of broadcast receivers and associated equipment / European Commitee for Electrothecnical Standardization