diff --git a/public/js/add_paper.js b/public/js/add_paper.js
index 0d434e3512e98dcc3671494016924fd9128984bd..62fa9efb2f3eece8454b10b0949f8ebc9924d59a 100644
--- a/public/js/add_paper.js
+++ b/public/js/add_paper.js
@@ -20,12 +20,18 @@ function addpaper(item) {
     }
 
     authors = authors.substring(0, authors.length - 2);
-    // Prepare YouTube Link
-    // var array_contains_youtube = true
-    var YouTubeHTML = ''
+    last_item = item
+    var PDF_HTML = ''
     if ('pdf' in item.links) { // to be replaced by if (item.YouTubelink) or so...
-      var YouTubelink = item.links.youtube // to be replaced by item.YouTubelink or so...
-      YouTubeHTML = `<button type="button" href="${YouTubelink}" class="btn btn-outline-info btn-circle"> <i class="fas fa-globe"></i> </button>Link`
+      
+      var pdf_link = item.links.pdf // to be replaced by item.pdf_link or so...
+      PDF_HTML = `<a type="button" href="${pdf_link}" class="btn btn-outline-success btn-circle" target="_blank">  <i class="far fa-file-pdf"> </i></a>  PDF `
+    }
+
+    var UrlHTML = ''
+    if ('url' in item.links) { // to be replaced by if (item.YouTubelink) or so...
+      var url = item.links.url // to be replaced by item.pdf or so...
+      UrlHTML = `<a type="button" href="${url}" class="btn btn-outline-info btn-circle" target="_blank"> <i class="fas fa-globe"></i> </a> Link `
     }
     // Do Authors and Keywords
     var doi
@@ -37,13 +43,7 @@ function addpaper(item) {
       doi = '<small class="text-muted"> ' + item.item.conference.name + ',' + item.item.conference.date + ', ' + item.item.DOI
 
     }
-    // Prepare Explore Link
-    // var array_contains_explore_link = true
-    var ExploreHTML = ''
-    if ('demo' in item.links) { // to be replaced by if (item.YouTubelink) or so...
-      var ExploreLink = item.links.demo // to be replaced by item.ExploreLink or so...
-      ExploreHTML = `<button type="button" href="${ExploreLink}" class="btn btn-outline-success btn-circle">  <i class="far fa-file-pdf"> </i></button>PDF`
-    }
+    
 
     new_row.innerHTML = new_row.innerHTML + '<div class="card" style="max-width: 1080px;">' +
       '<div class="row">' +
@@ -63,11 +63,11 @@ function addpaper(item) {
       '</h5>' +
       doi +
       '<br>' +
-      ExploreHTML +
+      PDF_HTML + ' ' + 
       //BIBTEX BUTTON
       // '<button type="button" class="btn btn-outline-danger btn-circle" data-toggle="collapse" data-target="#bibtex-paper-vision" aria-expanded="false" aria-controls="bibtex-paper-vision"> <i class="fas fa-code"></i> </button>BIB' +
       
-      YouTubeHTML +
+      UrlHTML +
       '</small>' +
 
       // BIBTEX area