From f68c4fdad324d32f7c71dc9d005517a83c6801eb Mon Sep 17 00:00:00 2001
From: shirazos7 <shiraz@zbmath.org>
Date: Thu, 1 May 2025 14:00:02 +0200
Subject: [PATCH 1/2] rename identifierType and add condition

---
 xslt/articles/xslt-article-OpenAire2.xslt | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/xslt/articles/xslt-article-OpenAire2.xslt b/xslt/articles/xslt-article-OpenAire2.xslt
index bcfafe0e..77ebea11 100644
--- a/xslt/articles/xslt-article-OpenAire2.xslt
+++ b/xslt/articles/xslt-article-OpenAire2.xslt
@@ -16,9 +16,11 @@
        <resource xsi:schemaLocation="http://namespace.openaire.eu/schema/oaire/ https://www.openaire.eu/schema/repo-lit/4.0/openaire.xsd">
         <xsl:apply-templates select="root/zbmath_url"/>
 
-                <datacite:alternateIdentifiers>
-                <xsl:apply-templates select="root/links"/>
-                </datacite:alternateIdentifiers>
+                <xsl:if test="root/links/*">
+                    <datacite:alternateIdentifiers>
+                    <xsl:apply-templates select="root/links"/>
+                    </datacite:alternateIdentifiers>
+                </xsl:if>
 
                <datacite:creators>
                 <xsl:apply-templates select="root/contributors/authors"/>
@@ -115,7 +117,7 @@ Content generated by zbMATH Open, such as reviews, classifications, software, or
     </xsl:template>
 
     <xsl:template match="zbmath_url">
-        <datacite:identifier IdentifierType="URL">
+        <datacite:identifier identifierType="URL">
             <xsl:value-of select="."/>
         </datacite:identifier>
     </xsl:template>

From 23877df244f8985b8212c1f2a7f32a4386d16498 Mon Sep 17 00:00:00 2001
From: shirazos7 <shiraz@zbmath.org>
Date: Fri, 2 May 2025 11:20:40 +0200
Subject: [PATCH 2/2] correct  the IdentifierType to identifierType

---
 test/data/articles/reference-OpenAire2.xml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/data/articles/reference-OpenAire2.xml b/test/data/articles/reference-OpenAire2.xml
index a878d793..c4b239ae 100644
--- a/test/data/articles/reference-OpenAire2.xml
+++ b/test/data/articles/reference-OpenAire2.xml
@@ -6,7 +6,7 @@
           xmlns="http://namespace.openaire.eu/schema/oaire/"
           xmlns:oaire="http://www.openarchives.org/OAI/2.0/oai_dc/"
           xsi:schemaLocation="http://namespace.openaire.eu/schema/oaire/ https://www.openaire.eu/schema/repo-lit/4.0/openaire.xsd">
-   <datacite:identifier IdentifierType="URL">https://zbmath.org/6383667</datacite:identifier>
+   <datacite:identifier identifierType="URL">https://zbmath.org/6383667</datacite:identifier>
    <datacite:alternateIdentifiers>
       <datacite:alternateIdentifier alternateIdentifierType="DOI">10.4007/annals.2015.181.1.7</datacite:alternateIdentifier>
    </datacite:alternateIdentifiers>