diff --git a/doc/pub/week14/html/week14-bs.html b/doc/pub/week14/html/week14-bs.html
index 57be0e5f..293e633b 100644
--- a/doc/pub/week14/html/week14-bs.html
+++ b/doc/pub/week14/html/week14-bs.html
@@ -161,7 +161,8 @@ <h2 id="plans-for-the-week-april-22-26-2024" class="anchor">Plans for the week A
 <li> Reading recommendation:
 <ol type="a"></li>
  <li> Goodfellow et al chapter 20.10-20-14</li>
- <li> Calvin Luo <a href="https://calvinyluo.com/2022/08/26/diffusion-tutorial.html" target="_self"><tt>https://calvinyluo.com/2022/08/26/diffusion-tutorial.html</tt></a>
+ <li> Calvin Luo <a href="https://calvinyluo.com/2022/08/26/diffusion-tutorial.html" target="_self"><tt>https://calvinyluo.com/2022/08/26/diffusion-tutorial.html</tt></a></li>
+ <li> An Introduction to Variational Autoencoders, by Kingma and Welling, see <a href="https://arxiv.org/abs/1906.02691" target="_self"><tt>https://arxiv.org/abs/1906.02691</tt></a>
 <!-- o "Video of lecture":"" -->
 <!-- o <a href="https://github.com/CompPhysics/AdvancedMachineLearning/blob/main/doc/HandwrittenNotes/2024/NotesApril23.pdf" target="_self">Whiteboard notes</a> --></li>
 </ol>
diff --git a/doc/pub/week14/html/week14-reveal.html b/doc/pub/week14/html/week14-reveal.html
index 20fbf437..bb00f4c2 100644
--- a/doc/pub/week14/html/week14-reveal.html
+++ b/doc/pub/week14/html/week14-reveal.html
@@ -206,7 +206,8 @@ <h2 id="plans-for-the-week-april-22-26-2024">Plans for the week April 22-26, 202
 <p><li> Reading recommendation:
 <ol type="a"></li>
  <p><li> Goodfellow et al chapter 20.10-20-14</li>
- <p><li> Calvin Luo <a href="https://calvinyluo.com/2022/08/26/diffusion-tutorial.html" target="_blank"><tt>https://calvinyluo.com/2022/08/26/diffusion-tutorial.html</tt></a>
+ <p><li> Calvin Luo <a href="https://calvinyluo.com/2022/08/26/diffusion-tutorial.html" target="_blank"><tt>https://calvinyluo.com/2022/08/26/diffusion-tutorial.html</tt></a></li>
+ <p><li> An Introduction to Variational Autoencoders, by Kingma and Welling, see <a href="https://arxiv.org/abs/1906.02691" target="_blank"><tt>https://arxiv.org/abs/1906.02691</tt></a>
 <!-- o "Video of lecture":"" -->
 <!-- o <a href="https://github.com/CompPhysics/AdvancedMachineLearning/blob/main/doc/HandwrittenNotes/2024/NotesApril23.pdf" target="_blank">Whiteboard notes</a> --></li>
 </ol>
diff --git a/doc/pub/week14/html/week14-solarized.html b/doc/pub/week14/html/week14-solarized.html
index e38dddd4..9cba3464 100644
--- a/doc/pub/week14/html/week14-solarized.html
+++ b/doc/pub/week14/html/week14-solarized.html
@@ -144,7 +144,8 @@ <h2 id="plans-for-the-week-april-22-26-2024">Plans for the week April 22-26, 202
 <li> Reading recommendation:
 <ol type="a"></li>
  <li> Goodfellow et al chapter 20.10-20-14</li>
- <li> Calvin Luo <a href="https://calvinyluo.com/2022/08/26/diffusion-tutorial.html" target="_blank"><tt>https://calvinyluo.com/2022/08/26/diffusion-tutorial.html</tt></a>
+ <li> Calvin Luo <a href="https://calvinyluo.com/2022/08/26/diffusion-tutorial.html" target="_blank"><tt>https://calvinyluo.com/2022/08/26/diffusion-tutorial.html</tt></a></li>
+ <li> An Introduction to Variational Autoencoders, by Kingma and Welling, see <a href="https://arxiv.org/abs/1906.02691" target="_blank"><tt>https://arxiv.org/abs/1906.02691</tt></a>
 <!-- o "Video of lecture":"" -->
 <!-- o <a href="https://github.com/CompPhysics/AdvancedMachineLearning/blob/main/doc/HandwrittenNotes/2024/NotesApril23.pdf" target="_blank">Whiteboard notes</a> --></li>
 </ol>
diff --git a/doc/pub/week14/html/week14.html b/doc/pub/week14/html/week14.html
index 64858002..4585351a 100644
--- a/doc/pub/week14/html/week14.html
+++ b/doc/pub/week14/html/week14.html
@@ -221,7 +221,8 @@ <h2 id="plans-for-the-week-april-22-26-2024">Plans for the week April 22-26, 202
 <li> Reading recommendation:
 <ol type="a"></li>
  <li> Goodfellow et al chapter 20.10-20-14</li>
- <li> Calvin Luo <a href="https://calvinyluo.com/2022/08/26/diffusion-tutorial.html" target="_blank"><tt>https://calvinyluo.com/2022/08/26/diffusion-tutorial.html</tt></a>
+ <li> Calvin Luo <a href="https://calvinyluo.com/2022/08/26/diffusion-tutorial.html" target="_blank"><tt>https://calvinyluo.com/2022/08/26/diffusion-tutorial.html</tt></a></li>
+ <li> An Introduction to Variational Autoencoders, by Kingma and Welling, see <a href="https://arxiv.org/abs/1906.02691" target="_blank"><tt>https://arxiv.org/abs/1906.02691</tt></a>
 <!-- o "Video of lecture":"" -->
 <!-- o <a href="https://github.com/CompPhysics/AdvancedMachineLearning/blob/main/doc/HandwrittenNotes/2024/NotesApril23.pdf" target="_blank">Whiteboard notes</a> --></li>
 </ol>
diff --git a/doc/pub/week14/ipynb/ipynb-week14-src.tar.gz b/doc/pub/week14/ipynb/ipynb-week14-src.tar.gz
index 77c60bc9..b56eda83 100644
Binary files a/doc/pub/week14/ipynb/ipynb-week14-src.tar.gz and b/doc/pub/week14/ipynb/ipynb-week14-src.tar.gz differ
diff --git a/doc/pub/week14/ipynb/week14.ipynb b/doc/pub/week14/ipynb/week14.ipynb
index 614d7964..8dab8695 100644
--- a/doc/pub/week14/ipynb/week14.ipynb
+++ b/doc/pub/week14/ipynb/week14.ipynb
@@ -2,7 +2,7 @@
  "cells": [
   {
    "cell_type": "markdown",
-   "id": "a608b43b",
+   "id": "288d48ce",
    "metadata": {
     "editable": true
    },
@@ -14,7 +14,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "fa8f696e",
+   "id": "3c86a2f2",
    "metadata": {
     "editable": true
    },
@@ -27,7 +27,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6da0ec8a",
+   "id": "7aa80cfe",
    "metadata": {
     "editable": true
    },
@@ -45,13 +45,15 @@
     "a. Goodfellow et al chapter 20.10-20-14\n",
     "\n",
     "b. Calvin Luo <https://calvinyluo.com/2022/08/26/diffusion-tutorial.html>\n",
+    "\n",
+    "c. An Introduction to Variational Autoencoders, by Kingma and Welling, see <https://arxiv.org/abs/1906.02691>\n",
     "<!-- o \"Video of lecture\":\"\" -->\n",
     "<!-- o [Whiteboard notes](https://github.com/CompPhysics/AdvancedMachineLearning/blob/main/doc/HandwrittenNotes/2024/NotesApril23.pdf) -->"
    ]
   },
   {
    "cell_type": "markdown",
-   "id": "8fff041c",
+   "id": "96e7529f",
    "metadata": {
     "editable": true
    },
@@ -63,7 +65,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ec374d4a",
+   "id": "6cb28024",
    "metadata": {
     "editable": true
    },
@@ -75,7 +77,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "442c17a4",
+   "id": "fa4a7fba",
    "metadata": {
     "editable": true
    },
@@ -85,7 +87,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "38e2e43b",
+   "id": "de57c216",
    "metadata": {
     "editable": true
    },
@@ -112,7 +114,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b743ea66",
+   "id": "d769a75c",
    "metadata": {
     "editable": true
    },
@@ -132,7 +134,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "be7769fd",
+   "id": "a2c25bb0",
    "metadata": {
     "editable": true
    },
@@ -144,7 +146,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b7a17379",
+   "id": "b9506fea",
    "metadata": {
     "editable": true
    },
@@ -156,7 +158,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "508953f5",
+   "id": "5a9d0e28",
    "metadata": {
     "editable": true
    },
@@ -168,7 +170,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "06f32c68",
+   "id": "3d981b19",
    "metadata": {
     "editable": true
    },
@@ -179,7 +181,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "107355ee",
+   "id": "2f5e58d9",
    "metadata": {
     "editable": true
    },
@@ -191,7 +193,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "adc7b046",
+   "id": "31be13c1",
    "metadata": {
     "editable": true
    },
@@ -203,7 +205,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8871e50e",
+   "id": "e13eb233",
    "metadata": {
     "editable": true
    },
@@ -215,7 +217,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "40a70431",
+   "id": "a0f97be1",
    "metadata": {
     "editable": true
    },
@@ -225,7 +227,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7ae8f9b4",
+   "id": "7e02c882",
    "metadata": {
     "editable": true
    },
@@ -240,7 +242,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "eab8c4eb",
+   "id": "33dae737",
    "metadata": {
     "editable": true
    },
@@ -252,7 +254,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e268e7b7",
+   "id": "e7f8d3ca",
    "metadata": {
     "editable": true
    },
@@ -266,7 +268,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "656d3fb1",
+   "id": "c4444733",
    "metadata": {
     "editable": true
    },
@@ -278,7 +280,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "abc183d0",
+   "id": "5642a573",
    "metadata": {
     "editable": true
    },
@@ -291,7 +293,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "84344f4e",
+   "id": "7191d369",
    "metadata": {
     "editable": true
    },
@@ -308,7 +310,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e72f81fb",
+   "id": "409f9368",
    "metadata": {
     "editable": true
    },
@@ -328,7 +330,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "15c86f9b",
+   "id": "76014c15",
    "metadata": {
     "editable": true
    },
@@ -346,7 +348,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "fd8ed320",
+   "id": "92fe95a3",
    "metadata": {
     "editable": true
    },
@@ -361,7 +363,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8e615929",
+   "id": "411d62e9",
    "metadata": {
     "editable": true
    },
@@ -371,7 +373,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c80bee37",
+   "id": "c9482b0b",
    "metadata": {
     "editable": true
    },
@@ -382,7 +384,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c73e9ed4",
+   "id": "c1b31c45",
    "metadata": {
     "editable": true
    },
@@ -397,7 +399,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "cbbc6db4",
+   "id": "9b006d82",
    "metadata": {
     "editable": true
    },
@@ -413,7 +415,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "dd08d380",
+   "id": "25a3ec6e",
    "metadata": {
     "editable": true
    },
@@ -428,7 +430,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "14ea2536",
+   "id": "107d28b2",
    "metadata": {
     "editable": true
    },
@@ -441,7 +443,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6261d9d1",
+   "id": "c3d00d1c",
    "metadata": {
     "editable": true
    },
@@ -459,7 +461,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4dd083f7",
+   "id": "5bc20bef",
    "metadata": {
     "editable": true
    },
@@ -474,7 +476,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "3cf1ff1f",
+   "id": "4161d61d",
    "metadata": {
     "editable": true
    },
@@ -486,7 +488,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d3a1055d",
+   "id": "2e0124ac",
    "metadata": {
     "editable": true
    },
@@ -499,7 +501,7 @@
   {
    "cell_type": "code",
    "execution_count": 1,
-   "id": "2cec95e5",
+   "id": "0d67fa52",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -704,7 +706,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "33b4ae32",
+   "id": "24ea3f9e",
    "metadata": {
     "editable": true
    },
@@ -715,7 +717,7 @@
   {
    "cell_type": "code",
    "execution_count": 2,
-   "id": "0f650d11",
+   "id": "d7177b9a",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -826,7 +828,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "91d38543",
+   "id": "a0696ad6",
    "metadata": {
     "editable": true
    },
diff --git a/doc/pub/week14/pdf/week14.pdf b/doc/pub/week14/pdf/week14.pdf
index efe08a19..0503279b 100644
Binary files a/doc/pub/week14/pdf/week14.pdf and b/doc/pub/week14/pdf/week14.pdf differ
diff --git a/doc/src/week14/week14.do.txt b/doc/src/week14/week14.do.txt
index eaa71d34..3ec313d7 100644
--- a/doc/src/week14/week14.do.txt
+++ b/doc/src/week14/week14.do.txt
@@ -11,6 +11,7 @@ o Diffusion models
 o Reading recommendation:
   o Goodfellow et al chapter 20.10-20-14
   o Calvin Luo URL:"https://calvinyluo.com/2022/08/26/diffusion-tutorial.html"
+  o An Introduction to Variational Autoencoders, by Kingma and Welling, see URL:"https://arxiv.org/abs/1906.02691"
 #o "Video of lecture":""
 #o "Whiteboard notes":"https://github.com/CompPhysics/AdvancedMachineLearning/blob/main/doc/HandwrittenNotes/2024/NotesApril23.pdf"
 !eblock