Update oai pmh authored by Peter Toth's avatar Peter Toth
## What is OAI-PMH and where to find information?
The Open Archives Initiative - Prototcol for Metadata Harvesting provides an application-independent interoperability framework.
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The details can be found:
[http://www.openarchives.org](http://www.openarchives.org/OAI/openarchivesprotocol.html)
## Online Validation
Useful online tool for validation:
[https://validator.oaipmh.com/](https://validator.oaipmh.com/)
Hint: The Standard says "The Content-Type returned for all OAI-PMH requests **must** be _text/xml_." but the validator expect _application/xml_!
> Hint: The Standard says "The Content-Type returned for all OAI-PMH requests **must** be _text/xml_." but the validator expect _application/xml_!