diff --git a/application/api/controller/References.php b/application/api/controller/References.php
index 71038535..9124533d 100644
--- a/application/api/controller/References.php
+++ b/application/api/controller/References.php
@@ -188,6 +188,7 @@ class References extends Base
         if(!is_string($sContent)){
             return json_encode(['status' => 2,'msg' => 'The content format is incorrect']);
         }
+        $sContent = str_replace(['?','？'], '.', $sContent);
         $aContent = explode('.', $sContent);
         $aUpdate = [];
         if(count($aContent) > 1){
@@ -218,6 +219,7 @@ class References extends Base
             $doiPattern = '/10\.\d{4,9}\/[^\s\/?#&=]+/i';
             if (preg_match($doiPattern, $sDoi, $matches)) {
                $aUpdate['doi'] = $matches[0];
+               $aUpdate['doilink'] = 'https://doi.org/'.''.$aUpdate['doi'];
             }else{
                 $aUpdate['doi'] = $sDoi;
             }