ZAMM GmbH, Links
| www.dakks.de | Deutsche Akkreditierungsstelle |
| www.bundesnetzagentur.de | Bundesnetzagentur |
| www.iec.ch | International Electrotechnical Commision |
| www.ansi.org | American National Standards Institute |
| www.iso.org | International Organization for Standardization |
| www.etsi.org | European Telecommunication Standards Institute |
| www.beuth.de | Beuth Verlag |
| www.vde-verlag.de | VDE-Verlag |