Zahraniční normy
- CEN European Committee for Standardization http://esearch.cen.eu/
- ETSI European Telecommunications Standards Institute http://webapp.etsi.org/workprogram/SimpleSearch/QueryForm.asp
- IEC International Electrotechnical Commission http://www.iec.ch/
- ISO International Organization for Standardization http://www.iso.org/iso/home.html
- ASTM American society for Testing and Materials http://www.astm.org/DIGITAL_LIBRARY/index.shtml
- ANSI American National Standards Institute http://www.ansi.org/
- NISO National Information Standards Organization http://www.niso.org/kst/reports/standards/
- DIN Deutsches Institut für Normung http://www.din.de
- STN Slovenské technické normy http://www.slovenske-normy.sk/
- BSi British Standards http://www.standardscentre.co.uk