diff --git a/ontology/saref4wear.ttl b/ontology/saref4wear.ttl
index bca1f7ac93fb4a7a583c521d8bbaae683d0d8935..ceeb63d4e72c2e55c1e3d886a099efdc4c1c1fb2 100644
--- a/ontology/saref4wear.ttl
+++ b/ontology/saref4wear.ttl
@@ -29,6 +29,7 @@
                                       dcterms:modified "2020-06-06"^^xsd:date ;
                                       dcterms:publisher <https://www.etsi.org/> ;
                                       dcterms:source <https://saref.etsi.org/sources/saref4wear/> ;
+                                      rdfs:seeAlso <https://www.etsi.org/deliver/etsi_ts/103400_103499/10341009/01.01.01_60/ts_10341009v010101p.pdf> ;
                                       dcterms:title "SAREF4WEAR: an extension of SAREF for Wearables"@en ;
                                       vann:preferredNamespacePrefix "s4wear" ;
                                       vann:preferredNamespaceUri "https://saref.etsi.org/saref4wear/" ;