diff --git a/docs/029/index.ipynb b/docs/029/index.ipynb
index 51d8800..5b26e56 100644
--- a/docs/029/index.ipynb
+++ b/docs/029/index.ipynb
@@ -18,7 +18,7 @@
    },
    "source": [
     "::::{margin}\n",
-    ":::{card} Definition of the normalized Blatt–Weisskopf form factor from Hankel functions of the first kind.\n",
+    ":::{card} Definition of the normalized Blatt–Weisskopf form factor (barrier factor) from Hankel functions of the first kind.\n",
     "TR-029\n",
     "^^^\n",
     "This report investigates how to implement [ComPWA/ampform#417](https://github.com/ComPWA/ampform/issues/417), where it was suggested to define the 'normalized' Blatt–Weisskopf function $B_L^2(z)$ from a Hankel function of the first kind, $h_l^{(1)}$.\n",
@@ -66,7 +66,11 @@
   },
   {
    "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",
@@ -111,7 +115,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "In the following, we call $F_\\ell(z)$ the _unnormalized_ Blatt–Weisskopf form factor.\n",
+    "In the following, we call $F_\\ell(z)$ the _unnormalized_ Blatt–Weisskopf form factor (barrier factor).\n",
     "Following Chung and other resources (see e.g. {cite}`Chung:1995dx`, p. 415), AmpForm implements a unitless, _normalized_ Blatt–Weisskopf factor $B_L$, meaning that $B_L(1)=1$.[^3]\n",
     "It can be defined in terms of $F_L$ as\n",
     "\n",
@@ -323,7 +327,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "## Normalized Blatt–Weisskopf form factor"
+    "## Normalized Blatt–Weisskopf form factor (barrier factor)"
    ]
   },
   {