diff --git a/wiki/d-si-online-guide.md b/wiki/d-si-online-guide.md
index 1270ebe092cbf5dc53f7f5fd2906f3bffddf5642..bd57b9e341a620dbc287f06b933a3a712617164d 100644
--- a/wiki/d-si-online-guide.md
+++ b/wiki/d-si-online-guide.md
@@ -58,7 +58,6 @@ The XSD is licensed by Physikalisch-Technische Bundesanstalt under [GNU LGPL v3]
 
 The documentation and examples are licenced by Physikalisch-Technische Bundesanstalt under [Creative Commons Attribution 4.0 International License](wiki/WIKI.LICENSE).
 
-
 ## Liability
 
 This XSD is distributed in the hope that it will be useful,
@@ -67,11 +66,23 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 [GNU Lesser General Public License](/COPYING.LESSER) for more details.
 
 
-
 ## Citing the XSD
 
 A citeable resource for this release is available under the DOI [10.5281/zenodo.4709001](https://doi.org/10.5281/zenodo.3366901) at Zenodo.
 
+## Authors of documentation
+
+D. Hutzschenreuter, Physikalisch-Technische Bundesanstalt
+
+## Acknowledgement
+
+The development of the XML scheme is part of the research project EMPIR 17IND02 (title: SmartCom). 
+This project (17IND02) has received funding from the EMPIR programme, co-financed by the Participating States and 
+from the European Union's Horizon 2020 research and innovation programme.
+
+Special thanks go to C. Brown, B. Gloger, J. H. Loewe and J. Rethmeier from Physikalisch-Technische Bundesanstalt for their indispensable
+support in preparation of the release.
+
 ## References
 
 [1] [SmartCom Digital System of Units (D-SI) Guide for the use of the metadata-format used in metrology for the easy-to-use, safe, harmonised and unambiguous digital transfer of metrological data](https://doi.org/10.5281/zenodo.3816686)