diff --git a/application/default/controllers/ServiceController.php b/application/default/controllers/ServiceController.php
index dc2c3a05..77723fda 100644
--- a/application/default/controllers/ServiceController.php
+++ b/application/default/controllers/ServiceController.php
@@ -1387,7 +1387,7 @@ class ServiceController extends Zend_Controller_Action
 		$ris='';
 		if ($lang=='cn' && !empty($uuid))
 		{
-			$sql="select d.*,m.description from datadoi d left join metadata m on d.uuid=m.uuid where d.uuid='$uuid' and d.ts_published is not null";
+			$sql="select d.*,m.description,m.ts_published as publish_year from datadoi d left join metadata m on d.uuid=m.uuid where d.uuid='$uuid' and d.ts_published is not null";
 			$row=$this->db->fetchRow($sql);
 			$authors=explode(',',str_replace('"','',substr($row['authors'],1,-1)));
 			$ris.='TY  - JOUR'."\r\n";
@@ -1396,7 +1396,7 @@ class ServiceController extends Zend_Controller_Action
 			{
 				$ris.='A1  - '.$a."\r\n";
 			}
-			$ris.='Y1  - '.date('Y/m/d',strtotime($row['ts_published']))."\r\n";
+			$ris.='Y1  - '.(empty($row['publish_year'])?date('Y/m/d',strtotime($row['ts_published'])):date('Y/m/d',strtotime($row['publish_year'])))."\r\n";
 			$ris.='JF  - '.$row['publisher']."\r\n";
 			$ris.='JA  - '.$row['publisher']."\r\n";
 			$ris.='UR  - http://dx.doi.org/'.$row['doi']."\r\n";
@@ -1407,7 +1407,7 @@ class ServiceController extends Zend_Controller_Action
 		}
 		else if  ($lang=='en' && !empty($uuid))
 		{
-			$sql="select d.*,m.description from datadoi d left join metadata m on d.uuid=m.uuid where d.uuid='$uuid' and d.ts_published is not null";
+			$sql="select d.*,m.description,m.ts_published as publish_year from datadoi d left join metadata m on d.uuid=m.uuid where d.uuid='$uuid' and d.ts_published is not null";
 			$row=$this->db->fetchRow($sql);
 			$authors=explode(',',str_replace('"','',substr($row['author_en'],1,-1)));
 			$ris.='TY  - JOUR'."\r\n";
@@ -1416,7 +1416,7 @@ class ServiceController extends Zend_Controller_Action
 			{
 				$ris.='A1  - '.$a."\r\n";
 			}
-			$ris.='Y1  - '.date('Y/m/d',strtotime($row['ts_published']))."\r\n";
+			$ris.='Y1  - '.(empty($row['publish_year'])?date('Y/m/d',strtotime($row['ts_published'])):date('Y/m/d',strtotime($row['publish_year'])))."\r\n";
 			$ris.='JF  - '.$row['publisher_en']."\r\n";
 			$ris.='JA  - '.$row['publisher_en']."\r\n";
 			$ris.='UR  - http://dx.doi.org/'.$row['doi']."\r\n";
@@ -1443,30 +1443,30 @@ class ServiceController extends Zend_Controller_Action
 		$bib='';
 		if ($lang=='cn' && !empty($uuid))
 		{
-			$sql="select d.*,m.description from datadoi d left join metadata m on d.uuid=m.uuid where d.uuid='$uuid' and d.ts_published is not null";
+			$sql="select d.*,m.description,m.ts_published as publish_year from datadoi d left join metadata m on d.uuid=m.uuid where d.uuid='$uuid' and d.ts_published is not null";
 			$row=$this->db->fetchRow($sql);
 			$bib.='@article{'.$row['doi'].",\r\n";
 			$bib.='    author = '.str_replace('"','',str_replace(',',' and ',$row['authors'])).",\r\n";
 			$bib.='    journal = {'.$row['publisher']."},\r\n";
 			$bib.='    publisher = {'.$row['publisher']."},\r\n";
 			$bib.='    title = {'.$row['title']."},\r\n";
-			$bib.='    year = {'.date('Y',strtotime($row['ts_published']))."},\r\n";
-			$bib.='    month = {'.date('m',strtotime($row['ts_published']))."},\r\n";
+			$bib.='    year = {'.(empty($row['publish_year'])?date('Y',strtotime($row['ts_published'])):date('Y',strtotime($row['publish_year'])))."},\r\n";
+			$bib.='    month = {'.(empty($row['publish_year'])?date('m',strtotime($row['ts_published'])):date('m',strtotime($row['publish_year'])))."},\r\n";
 			$bib.='    url = {http://dx.doi.org/'.$row['doi']."},\r\n";
 			$bib.='    doi = {'.$row['doi']."}\r\n";
 			$bib.="}\r\n";        
 		}
 		else if  ($lang=='en' && !empty($uuid))
 		{
-			$sql="select d.*,m.description from datadoi d left join metadata m on d.uuid=m.uuid where d.uuid='$uuid' and d.ts_published is not null";
+			$sql="select d.*,m.description,m.ts_published as publish_year from datadoi d left join metadata m on d.uuid=m.uuid where d.uuid='$uuid' and d.ts_published is not null";
 			$row=$this->db->fetchRow($sql);
 			$bib.='@article{'.$row['doi'].",\r\n";
 			$bib.='    author = '.str_replace('"','',str_replace(',',' and ',$row['author_en'])).",\r\n";
 			$bib.='    journal = {'.$row['publisher_en']."},\r\n";
 			$bib.='    publisher = {'.$row['publisher_en']."},\r\n";
 			$bib.='    title = {'.$row['title']."},\r\n";
-			$bib.='    year = {'.date('Y',strtotime($row['ts_published']))."},\r\n";
-			$bib.='    month = {'.date('m',strtotime($row['ts_published']))."},\r\n";
+			$bib.='    year = {'.(empty($row['publish_year'])?date('Y',strtotime($row['ts_published'])):date('Y',strtotime($row['publish_year'])))."},\r\n";
+			$bib.='    month = {'.(empty($row['publish_year'])?date('m',strtotime($row['ts_published'])):date('m',strtotime($row['publish_year'])))."},\r\n";
 			$bib.='    url = {http://dx.doi.org/'.$row['doi']."},\r\n";
 			$bib.='    doi = {'.$row['doi']."}\r\n";
 			$bib.="}\r\n";