<?xml version="1.0"?>
<!-- Version 1.0 - Created 2011-01-13 - FZ, TIB, Germany -->
<rng:grammar xmlns:rng="http://relaxng.org/ns/structure/1.0" xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0" xmlns="http://datacite.org/schema/kernel-2.2" ns="http://datacite.org/schema/kernel-2.2" datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">
	<rng:define name="relatedIdentifierType">
		<a:documentation>
			The type of the RelatedIdentifier.
		</a:documentation>
		<rng:choice>
			<rng:value>ARK</rng:value>
			<rng:value>DOI</rng:value>
			<rng:value>EAN13</rng:value>
			<rng:value>EISSN</rng:value>
			<rng:value>Handle</rng:value>
			<rng:value>ISBN</rng:value>
			<rng:value>ISSN</rng:value>
			<rng:value>ISTC</rng:value>
			<rng:value>LISSN</rng:value>
			<rng:value>LSID</rng:value>
			<rng:value>PURL</rng:value>
			<rng:value>UPC</rng:value>
			<rng:value>URL</rng:value>
			<rng:value>URN</rng:value>
		</rng:choice>
	</rng:define>
</rng:grammar>