diff --git a/docs/029/index.ipynb b/docs/029/index.ipynb
index d75bcb9..309ccfc 100644
--- a/docs/029/index.ipynb
+++ b/docs/029/index.ipynb
@@ -11,6 +11,9 @@
   {
    "cell_type": "markdown",
    "metadata": {
+    "jupyter": {
+     "source_hidden": true
+    },
     "tags": [
      "dynamics",
      "sympy"
@@ -66,7 +69,11 @@
   },
   {
    "cell_type": "markdown",
-   "metadata": {},
+   "metadata": {
+    "jupyter": {
+     "source_hidden": true
+    }
+   },
    "source": [
     "As of AmpForm [v0.15](https://github.com/ComPWA/ampform/releases/tag/0.15.1), the implementation of [`BlattWeisskopfSquared`](https://ampform.readthedocs.io/0.15.x/api/ampform.dynamics/#ampform.dynamics.BlattWeisskopfSquared) contains hard-coded polynomials, see implementation [here](https://github.com/ComPWA/ampform/blob/0.15.1/src/ampform/dynamics/__init__.py#L66-L134).\n",
     "The motivation for this can be found in the citations mentioned in [its API documentation](https://ampform.readthedocs.io/0.15.x/api/ampform.dynamics/#ampform.dynamics.BlattWeisskopfSquared).\n",