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+# Publication note
+
+Version 1.3.0 of the D-SI reference implementation in XML is published at
+
+[Zenodo Repository DOI 10.5281/zenodo.3366902](https://zenodo.org/record/3366902#.XabORWbgpaQ)
+
+The machine-readable version of SI_Format.xsd is available at
+
+[Digital-SI (D-SI) XML - machine-readable provision of v1.3.0 XML scheme](https://www.ptb.de/si/v1.3.0/SI_Format.xsd)
+
+[Digital-SI (D-SI) XML - machine-readable provision of latest XML schemes](https://www.ptb.de/si/SI_Format.xsd)
+
+
+
 # XSD
 
 Schema files and instance examples for the XML implementation of the Digital System of Units (D-SI) data model.
 
-**SI\_Format.xsd Version 1.3.0 (status: ready for publication)**
+**SI_Format.xsd Version 1.3.0 (status: ready for publication)**
 
 - complete real and complex
 - real constants