oai-pmh.md

@@ -19,7 +19,7 @@ To get the complete List of Resourses. [Example](https://oer-repo.uibk.ac.at/edu
 - **GetRecord** - 
 To get the Details of a specific Resourse: [Example 1](https://oer-repo.uibk.ac.at/edu-sharing/eduservlet/oai/provider?verb=GetRecord&metadataPrefix=lom&identifier=oai:oer-repo.uibk.ac.at:e0d6bbfa-3945-437d-ba16-3c6fab848f37), [Example 2](https://repository.tugraz.at/oai2d?verb=GetRecord&metadataPrefix=lom&identifier=oai:repository.tugraz.at:vqyg5-xb977).
 
-As mentioned above, some implementaion are returning content-type as _text/xml_ like **invenio**, others like **edu-sharing** returning _application/xml_. So the client shallbe able to handle both!
+As mentioned above, some implementaion are returning content-type as _text/xml_ like [**invenio**](https://inveniosoftware.org), others like [**edu-sharing**](https://edu-sharing.com) returning _application/xml_. So the client shallbe able to handle both!
 
 **oerhub.at** harvests the data with a perl-based daemon. The implementation is based on [OAI-Harvester 1.20]( https://metacpan.org/pod/Net::OAI::Harvester). The Perl modul expects _text/xml_ and supports the standard DC. Our module  accepts in addition the _application/xml_ and has the specific LOM-handler implemented. The tests are rewritten against maintend repos.