anchor.diff:  							</c:when>
   							<c:otherwise>
   								<c:choose>
  -									<c:when test="${pubObj.digitalObjectId != null}">
  +									<c:when test="${pubObj.digitalObjectId != null && 
  +										pubObj.digitalObjectId ne ''}">
   										<a href="${pubUrl }">DOI: ${pubObj.digitalObjectId }</a>
   									</c:when>
   									<c:otherwise>
  
positive.code: 						Identifier
  					</th>
  					<th class="label">
  						First Author
  					</th>
  					<th class="label">
  						Title
  
negative.code: 						</c:choose>
  					</td>
  					<td class="label">
  						<c:if test="${!empty pubObj.documentAuthorCollection}">
  							<c:forEach var="author"
  								items="${pubObj.documentAuthorCollection}">
  									${author.lastName};
  							</c:forEach>
  						</c:if>		
  						
  						&nbsp;
  					</td>
  					<td class="label">
  					${pubObj.title}&nbsp;
  					</td>
  					<td class="rightLabel">
  						<c:if test="${pubObj.year!=0}">
  							${pubObj.year}
  						</c:if>
  						&nbsp;
  					</td>
  				</tr>
  				</c:forEach>
  				<c:forEach var="report" items="${nanoparticleSampleForm.map.particleSampleBean.domainParticleSample.reportCollection}" >
  					<c:url var="reportUrl" value="submitReport.do">
  							<c:param name="submitType" value="${submitType}" />
  							<c:param name="dispatch" value="detailView" />
  							<c:param name="particleId" value="${particleId}" />
  							<c:param name="reportId" value="${report.id}" />
  							<c:param name="location" value="${location}" />
  					</c:url>
  				<tr>
  					<td class="leftLabel">
  						<a href="${reportUrl}">REPORT: ${report.title}</a>
  