diff --git a/.ipynb_checkpoints/multi-area-model-checkpoint.ipynb b/.ipynb_checkpoints/multi-area-model-checkpoint.ipynb
index a441fa92b00c28c311922b829ba80809a85d4a45..795858296b24340f26e8d32f88bc7504c0604cbc 100644
--- a/.ipynb_checkpoints/multi-area-model-checkpoint.ipynb
+++ b/.ipynb_checkpoints/multi-area-model-checkpoint.ipynb
@@ -521,6 +521,18 @@
     "visualize_interareal_connectivity(M)"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "id": "bae85d86-157c-47a2-9826-860b410a440e",
+   "metadata": {},
+   "source": [
+    "Based on: <br>\n",
+    "Schmidt M, Bakker R, Hilgetag CC, Diesmann M & van Albada SJ <br>\n",
+    "Multi-scale account of the network structure of macaque visual cortex <br>\n",
+    "Brain Structure and Function (2018), 223: 1409 [https://doi.org/10.1007/s00429-017-1554-4](https://doi.org/10.1007/s00429-017-1554-4) <br> \n",
+    "Fig 4. D **Area-level connectivity of the model, based on data in a–c, expressed as relative indegrees for each target area**"
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "e67f37e9-ec8d-4bb1-bd21-45e966f47ab6",
diff --git a/multi-area-model.ipynb b/multi-area-model.ipynb
index a441fa92b00c28c311922b829ba80809a85d4a45..795858296b24340f26e8d32f88bc7504c0604cbc 100644
--- a/multi-area-model.ipynb
+++ b/multi-area-model.ipynb
@@ -521,6 +521,18 @@
     "visualize_interareal_connectivity(M)"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "id": "bae85d86-157c-47a2-9826-860b410a440e",
+   "metadata": {},
+   "source": [
+    "Based on: <br>\n",
+    "Schmidt M, Bakker R, Hilgetag CC, Diesmann M & van Albada SJ <br>\n",
+    "Multi-scale account of the network structure of macaque visual cortex <br>\n",
+    "Brain Structure and Function (2018), 223: 1409 [https://doi.org/10.1007/s00429-017-1554-4](https://doi.org/10.1007/s00429-017-1554-4) <br> \n",
+    "Fig 4. D **Area-level connectivity of the model, based on data in a–c, expressed as relative indegrees for each target area**"
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "e67f37e9-ec8d-4bb1-bd21-45e966f47ab6",