diff --git a/demo_drum_sound_separation_nmf.ipynb b/demo_drum_sound_separation_nmf.ipynb
index 0ec4ac0..8b00aca 100755
--- a/demo_drum_sound_separation_nmf.ipynb
+++ b/demo_drum_sound_separation_nmf.ipynb
@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "#### Date: Jun 2019 (*Review: March 2024*)\n",
+    "#### Date: Jun 2019 (*Review: March 2024*)<br>Programmer:  Christian Dittmar, Yiğitcan Özer\n",
     "\n",
     "#### The notebook proceeds in the following steps:\n",
     "<br>1. It loads an example audio file containing a drum recording\n",