diff --git a/src/Controller/ReferenceController.php b/src/Controller/ReferenceController.php
index f0bd8e3..6585c45 100644
--- a/src/Controller/ReferenceController.php
+++ b/src/Controller/ReferenceController.php
@@ -202,6 +202,15 @@ class ReferenceController extends AbstractController
         return $r[0];
     }
 
+    public static function retrieve39a($ref): Reference
+    {
+        $r = self::$emi->getRepository(Reference::class)->findBy(['type' => '39a', 'ndx' => $ref->getNdx()]);
+        if (!$r) {
+            return new Reference();
+        }
+        return $r[0];
+    }
+
     public static function retrieve1HC($ref): Reference
     {
         $r = self::$emi->getRepository(Reference::class)->findBy(['type' => '1hc', 'ndx' => $ref->getNdx()]);