diff --git a/content/multipledataset.html b/content/multipledataset.html
index 22e6560d..6d581c44 100644
--- a/content/multipledataset.html
+++ b/content/multipledataset.html
@@ -119,8 +119,12 @@ draft: false
         var op = $("<option/>", {
           value: JSON.stringify(val)
         })
-        if ($(this).attr("name") == "DOI" && sets.has(val.toString())) {
-          $(op).text(sets.get(val.toString()))
+        if ($(this).attr("name") == "DOI" && sets.has(val.string)) {
+          str=sets.get(val.string)
+          if(val.IsSupporting){
+            str+=" (SI)"
+          }
+          $(op).text(str)
         }
         else {
           $(op).text(val.toString())
@@ -177,8 +181,12 @@ draft: false
         if (trueTypeOf(el) == DOI.name) {
           var publi = doiCache.get(el.string, true)
           const sets = await getSets()
-          if (sets.has(el.toString())) {
-            $(td).append(sets.get(el.toString()))
+          if (sets.has(el.string)) {
+            var str=sets.get(el.string)
+            if(el.IsSupporting){
+              str+=" (SI)"
+            }
+            $(td).append(str)
           }
           $("<a/>", {
             href: el.url,
diff --git a/static/js/data.js b/static/js/data.js
index 4b212457..ec07f5bd 100644
--- a/static/js/data.js
+++ b/static/js/data.js
@@ -100,11 +100,24 @@ class state {
   };
 }
 class DOI {
-  constructor(doistring) {
+  constructor(doistring,IsSupporting=false) {
     this.string = doistring
+    this.IsSupporting = IsSupporting
   };
+  static fromString(str){
+    const vals=str.split(",")
+    if (vals.length>1) {
+      return new DOI(vals[0].toString())
+    }
+    else{
+      return new DOI(str[0].toString(),(true ? str[1]=== true.toString() : false))
+    }
+  }
   toString() {
-    return this.string;
+    var str=this.string;
+    if (this.IsSupporting) {
+      str+=" "+"(SI)"
+    }
   };
   get url() {
     return new URL(this.string, 'https://doi.org').toString()
@@ -222,7 +235,7 @@ class dataFileBase {
         dat.method = method.fromString(value)
         break;
       case "doi":
-        dat.DOI = new DOI(value);
+        dat.DOI = DOI.fromString(value);
         break;
       default:
     }