diff --git a/Database.md b/Database.md
index 69cacad..3410349 100644
--- a/Database.md
+++ b/Database.md
@@ -86,9 +86,9 @@ Creative Commons licenses are commonly used to govern the use and distribution o
 
 
 ## Dataset references & identifiers
-During the ingestion of the new dataset, there is the possibility to refer to existing publications (table 'document_references') through persistent Identifier (PID). Such identifiers are precisely defined and described in Tethys RDR under the metadata element "Dataset References" as identifier types: DOI, HANDLE, ISBN, URL, and URN. [manual, p. 21](./docs/HandbuchTethys.pdf#page=22). Self referencing identifiers of a dataset are stored inside the table 'document_identifiers'.
+During the ingestion of the new dataset, there is the possibility to refer to existing publications (table 'document_references') through persistent Identifier (PID). Such identifiers are precisely defined and described in Tethys RDR under the metadata element "Dataset References" as identifier types: DOI, HANDLE, ISBN, URL, and URN. ([manual, p. 21](./HandbuchTethys.pdf#page=22)). Self referencing identifiers of a dataset are stored inside the table 'document_identifiers'.
 
-In addition, the relation types (the kind of relationship) are precisely defined [manual, p. 22](./docs/HandbuchTethys.pdf#page=23). In most cases, the relation type “IsNewVersionOf” will be used.
+In addition, the relation types (the kind of relationship) are precisely defined ([manual, p. 22](./HandbuchTethys.pdf#page=23)). In most cases, the relation type “IsNewVersionOf” will be used.
 
 ![title](./tethys_references.png)
 * **document_identifiers**:
diff --git a/docs/HandbuchTethys.pdf b/HandbuchTethys.pdf
similarity index 100%
rename from docs/HandbuchTethys.pdf
rename to HandbuchTethys.pdf
diff --git a/docs/HandbuchTethys.pdf:Zone.Identifier b/docs/HandbuchTethys.pdf:Zone.Identifier
deleted file mode 100644
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@@ -1,3 +0,0 @@
-[ZoneTransfer]
-ZoneId=3
-HostUrl=about:internet