diff --git a/public/arf.json b/public/arf.json
index 039661b..4c06a87 100644
--- a/public/arf.json
+++ b/public/arf.json
@@ -215,7 +215,7 @@
                   "url": "https://github.com/vec2text/vec2text"
                 },
                 {
-                  "name": "Text Embeddings Reveal (Almost) As Much As Text",
+                  "name": "Text Embeddings Reveal (Almost) As Much As Text [N]",
                   "type": "url",
                   "url": "https://openreview.net/pdf?id=wK7wUdiM5g0"
                 }
diff --git a/public/js/arf.js b/public/js/arf.js
index 19c3103..ec30825 100644
--- a/public/js/arf.js
+++ b/public/js/arf.js
@@ -102,22 +102,19 @@ function update(source) {
     })
     .style("fill-opacity", 1e-6);
 
-  // Add Notes link for leaf nodes only
+  // Add Notes link for leaf nodes whose name ends with [N]
   nodeEnter
     .filter(function (d) {
-      return !d.children && !d._children;
+      // foglia + nome che termina con [N]
+      return !d.children && !d._children && /\[N\]$/.test(d.name);
     })
     .append("a")
     .attr("target", "_blank")
-    .attr("xlink:href", (d) => "viewer.html?file=notes/" + d.name + ".md")
-    .attr("target", "_blank") // ← open in new tab
-    /* .attr("xlink:href", function (d) {
-      return (
-        "https://git.hackinpovo.it/HackInPovo/resources/raw/branch/main/notes/" +
-        d.name +
-        ".txt"
-      );
-      })*/
+    .attr("xlink:href", function (d) {
+      // stesso nome ma senza [N] per il file delle note
+      var baseName = d.name.replace(/\s*\[N\]$/, "");
+      return "viewer.html?file=notes/" + baseName + ".md";
+    })
     .append("svg:text")
     .attr("x", function (d) {
       // Get the sibling text element (the node name) and calculate position
@@ -134,6 +131,7 @@ function update(source) {
     .style("font-size", "0.85em") // Smaller font
     .style("fill-opacity", 1e-6)
     .style("text-decoration", "underline");
+
   // END OF NEW CODE
 
   nodeEnter.append("svg:title").text(function (d) {