International
ISO - International Organization for Standardization
CEN - European Committee for Standardization
CENELEC - European Committee for Electrotechnical Standardization
ETSI - European Telecommunications Standards Institute
DS - Dansk Standard
SN - Standard Norge
SFS - Suomen Standardisoimisliitto
IST - Staðlaráð Íslands
DIN - Deutsches Institut für Normung
Sweden
ITS - Information Technology Standardisation
SEK - The Swedish Electrotechnical Commission