diff --git a/public/index.html b/public/index.html
index 5dcd1d1067732d1da382efb56c5a4a10ff84438f..2d101bf25831628566bb203ff98db3ea3c1494da 100644
--- a/public/index.html
+++ b/public/index.html
@@ -11,6 +11,7 @@
   <link rel="stylesheet" href="./css/bootstrap.min.css">
   <link href="css/main.css" rel="stylesheet">
   <link href="css/custom.css" rel="stylesheet">
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/xlsx/0.15.3/xlsx.full.min.js"></script>
   <script src="https://kit.fontawesome.com/79b3e255a2.js" crossorigin="anonymous"></script>
   <link rel="shortcut icon" type="image/png" sizes="32x32" href="./imgs/icon.png">
 
@@ -147,20 +148,20 @@
       </div>
       <!-- <li> Silberer, J., Santhanavanich, T., Müller, P., & Bäumer, T. (2020). 
           Promoting Objective and Subjective Safety for Cyclists in Metropolitan Areas. In Innovations for Metropolitan Areas (pp. 273–284). Springer
-          Berlin Heidelberg. https://doi.org/10.1007/978-3-662-60806-7_21
+          Berlin Heidelberg. https://doi.org/10.1007/978-3-662-60806-7_21 
         </li> -->
       <h5>2020</h5>
       <li>
         Santhanavanich, T., Wuerstle, P., Silberer, J., Loidl, V., Rodrigues, P., and Coors, V.:
-        <a href="https://doi.org/10.5194/isprs-annals-VI-4-W2-2020-143-2020">3D SAFE ROUTING NAVIGATION APPLICATION FOR
+        <a href="https://doi.org/10.5194/isprs-annals-VI-4-W2-2020-143-2020 ">3D SAFE ROUTING NAVIGATION APPLICATION FOR
           PEDESTRIANS AND CYCLISTS BASED ON OPEN SOURCE TOOLS</a>, ISPRS Ann. Photogramm. Remote Sens. Spatial Inf.
-        Sci., VI-4/W2-2020, 143–147, https://doi.org/10.5194/isprs-annals-VI-4-W2-2020-143-2020
+        Sci., VI-4/W2-2020, 143–147, https://doi.org/10.5194/isprs-annals-VI-4-W2-2020-143-2020 
       </li>
       <li>
         Schneider, S., Santhanavanich, T., Koukofikis, A., and Coors, V.:
-        <a href="https://doi.org/10.5194/isprs-annals-VI-4-W2-2020-157-2020">EXPLORING SCHEMES FOR VISUALIZING URBAN
+        <a href="https://doi.org/10.5194/isprs-annals-VI-4-W2-2020-157-2020 ">EXPLORING SCHEMES FOR VISUALIZING URBAN
           WIND FIELDS BASED ON CFD SIMULATIONS BY EMPLOYING OGC STANDARDS</a>, ISPRS Ann. Photogramm. Remote Sens.
-        Spatial Inf. Sci., VI-4/W2-2020, 157–163, https://doi.org/10.5194/isprs-annals-VI-4-W2-2020-157-2020
+        Spatial Inf. Sci., VI-4/W2-2020, 157–163, https://doi.org/10.5194/isprs-annals-VI-4-W2-2020-157-2020 
       </li>
       <li>...</li>
       <br>
@@ -185,7 +186,7 @@
               <span class="badge bg-success">Open Geospatial Consortium</span>
               <span class="badge bg-danger">pgRouting</span>
               <p class="card-text"><small class="text-muted"> ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci.,
-                  VI-4/W2-2020, 143–147, https://doi.org/10.5194/isprs-annals-VI-4-W2-2020-143-2020</small>
+                  VI-4/W2-2020, 143–147, https://doi.org/10.5194/isprs-annals-VI-4-W2-2020-143-2020</small> 
 
               </p>
             </div>
@@ -208,7 +209,7 @@
               <span class="badge badge-pill badge-info">pgRouting</span>
               <span class="badge badge-pill badge-info">Warning</span>
               <p class="card-text"><small class="text-muted"> ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci.,
-                  VI-4/W2-2020, 143–147, https://doi.org/10.5194/isprs-annals-VI-4-W2-2020-143-2020</small>
+                  VI-4/W2-2020, 143–147, https://doi.org/10.5194/isprs-annals-VI-4-W2-2020-143-2020</small> 
 
               </p>
             </div>
@@ -241,7 +242,7 @@
               </h5>
 
               <small class="text-muted"> ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci.,
-                VI-4/W2-2020, 143–147, https://doi.org/10.5194/isprs-annals-VI-4-W2-2020-143-2020
+                VI-4/W2-2020, 143–147, https://doi.org/10.5194/isprs-annals-VI-4-W2-2020-143-2020 
               
                 <br>
                 <button type="button" class="btn btn-outline-success btn-circle">  <i class="far fa-file-pdf"> </i></button>PDF
@@ -412,4 +413,4 @@
 
 </body>
 
-</html>
\ No newline at end of file
+</html>