*/
public DefaultElement findReferencesToResource(String resourceIdentifier) {
// search for <item identifierref="resourceIdentifier" >
for (Iterator<CPOrganization> it = rootNode.getOrganizations().getOrganizationIterator(); it.hasNext();) {
CPOrganization org = it.next();
for (Iterator<CPItem> itO = org.getItems().iterator(); itO.hasNext();) {
CPItem item = itO.next();
CPItem found = _findReferencesToRes(item, resourceIdentifier);
if (found != null) return found;
}
}