diff --git a/pom.xml b/pom.xml
index 5374deb..bc101b8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>infolis</groupId>
     <artifactId>metaDataTransformer</artifactId>
-    <version>1.0-SNAPSHOT</version>
+    <version>1.1-SNAPSHOT</version>
     <packaging>jar</packaging>
     <build>
         <plugins>
@@ -47,4 +47,4 @@
         </dependency>
     </dependencies>
     <name>metaDataTransformer</name>
-</project>
\ No newline at end of file
+</project>
diff --git a/src/main/java/infolis/metaDataTransformer/output/OutputWriter.java b/src/main/java/infolis/metaDataTransformer/output/OutputWriter.java
index eabd86e..e8e83a8 100644
--- a/src/main/java/infolis/metaDataTransformer/output/OutputWriter.java
+++ b/src/main/java/infolis/metaDataTransformer/output/OutputWriter.java
@@ -22,7 +22,7 @@
 public class OutputWriter {
 
     String lang = null, abstractDesc = null, title = null, identifier = null, uri = null;
-    List<String> authors = new ArrayList<>(), subjects = new ArrayList<>();
+    List<String> authors = new ArrayList<>(), subjects = new ArrayList<>(), identifiers = new ArrayList<>();
     String outputPath = null, fileName = null;
     
     public OutputWriter(String lang, String abstractDesc, String title, String identifier, String uri, List<String> authors, List<String> subjects, String outputPath, String fileName) {
@@ -36,6 +36,17 @@ public OutputWriter(String lang, String abstractDesc, String title, String ident
         this.outputPath = outputPath;
         this.fileName = fileName;
     }
+    
+    public OutputWriter(String lang, String abstractDesc, String title, List<String> identifiers, List<String> authors, List<String> subjects, String outputPath, String fileName) {
+        this.lang = lang;
+        this.abstractDesc = abstractDesc;
+        this.title = title;
+        this.identifiers = identifiers;
+        this.authors = authors;
+        this.subjects = subjects;
+        this.outputPath = outputPath;
+        this.fileName = fileName;
+    }
 
     public void writeOutput() {
         DocumentBuilderFactory icFactory = DocumentBuilderFactory.newInstance();
@@ -50,9 +61,11 @@ public void writeOutput() {
             node.appendChild(header);
 
             // append child elements to root element
-            Element identifierEle = docOut.createElement("identifier");
-            identifierEle.setTextContent(identifier);
-            header.appendChild(identifierEle);
+            if (null != identifier) {
+                Element identifierEle = docOut.createElement("identifier");
+                identifierEle.setTextContent(identifier);
+                header.appendChild(identifierEle);
+            }
 
             Element metadata = docOut.createElement("metadata");
             node.appendChild(metadata);
@@ -72,9 +85,17 @@ public void writeOutput() {
             langEle.setTextContent(lang);
             ns1.appendChild(langEle);
 
-            Element uriEle = docOut.createElement("dc:identifier");
-            uriEle.setTextContent(uri);
-            ns1.appendChild(uriEle);
+            if (null != uri) {
+                Element uriEle = docOut.createElement("dc:identifier");
+                uriEle.setTextContent(uri);
+                ns1.appendChild(uriEle);
+            }
+            
+            for (String id : identifiers) {
+                Element idEle = docOut.createElement("dc:identifier");
+                idEle.setTextContent(id);
+                ns1.appendChild(idEle);
+            }
 
             Element absEle = docOut.createElement("dc:description");
             absEle.setTextContent(abstractDesc);
diff --git a/src/main/java/infolis/metaDataTransformer/ssoar/SSOARTransformator.java b/src/main/java/infolis/metaDataTransformer/ssoar/SSOARTransformator.java
index 41c7b7e..97d510f 100644
--- a/src/main/java/infolis/metaDataTransformer/ssoar/SSOARTransformator.java
+++ b/src/main/java/infolis/metaDataTransformer/ssoar/SSOARTransformator.java
@@ -36,8 +36,9 @@ public static void main(String args[]) throws ParserConfigurationException, SAXE
         File inDir = new File(inputPath);
         for (File f : inDir.listFiles()) {
 
-            String lang = null, abstractDesc = null, title = null, identifier = null, uri = null;
-            List<String> authors = new ArrayList<>(), subjects = new ArrayList<>();
+            String lang = null, abstractDesc = null, title = null;
+            List<String> authors = new ArrayList<>(), subjects = new ArrayList<>(), 
+            identifiers = new ArrayList<>();
 
             DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
             DocumentBuilder db = dbf.newDocumentBuilder();
@@ -46,7 +47,7 @@ public static void main(String args[]) throws ParserConfigurationException, SAXE
             NodeList fieldNodesHeader = doc.getElementsByTagName("ns0:identifier");
             for (int j = 0; j < fieldNodesHeader.getLength(); j++) {
                 Node fieldNode = fieldNodesHeader.item(j);
-                identifier = fieldNode.getTextContent();
+                identifiers.add(fieldNode.getTextContent());
             }
 
             NodeList fieldNodesBegin = doc.getElementsByTagName("ns1:dcvalue");
@@ -85,13 +86,13 @@ public static void main(String args[]) throws ParserConfigurationException, SAXE
                     if (element.getTextContent().equals("title") && language != null && language.getTextContent().equals(lang) && qualifier ==null) {
                         title = fieldNode.getTextContent();
                     }
-                    if (element.getTextContent().equals("identifier") && qualifier != null && qualifier.getTextContent().equals("uri")) {
-                        uri = fieldNode.getTextContent();
+                    if (element.getTextContent().equals("identifier")) {
+                        identifiers.add(fieldNode.getTextContent());
                     }
                 }
             }
            
-            OutputWriter writer = new OutputWriter(lang, abstractDesc, title, identifier, uri, authors, subjects, outputPath, f.getName());
+            OutputWriter writer = new OutputWriter(lang, abstractDesc, title, identifiers, authors, subjects, outputPath, f.getName());
             writer.writeOutput();
             
         }