diff --git a/doc/pub/week13/html/._week13-bs001.html b/doc/pub/week13/html/._week13-bs001.html
index 3c6e5a9a..20ecfb4f 100644
--- a/doc/pub/week13/html/._week13-bs001.html
+++ b/doc/pub/week13/html/._week13-bs001.html
@@ -290,10 +290,11 @@ <h2 id="overview-of-week-april-15-19" class="anchor">Overview of week April 15-1
 
 
 <!-- !bblock -->
-<!-- * <a href="https://youtu.be/SibaquLChg8" target="_self">Video of lecture TBA</a> -->
-<!-- * <a href="https://github.com/CompPhysics/ComputationalPhysics2/blob/gh-pages/doc/HandWrittenNotes/2023/NotesApril20.pdf" target="_self">Handwritten notes</a> -->
-<!-- !eblock -->
-
+<ul>
+<li> <a href="https://youtu.be/Hn2d8T-bS5E" target="_self">Video of lecture</a></li>
+<li> <a href="https://github.com/CompPhysics/ComputationalPhysics2/blob/gh-pages/doc/HandWrittenNotes/2024/NotesApril19.pdf" target="_self">Handwritten notes</a>
+<!-- !eblock --></li>
+</ul>
 <p>
 <!-- navigation buttons at the bottom of the page -->
 <ul class="pagination">
diff --git a/doc/pub/week13/html/week13-reveal.html b/doc/pub/week13/html/week13-reveal.html
index 99c2e6b4..c8f669e6 100644
--- a/doc/pub/week13/html/week13-reveal.html
+++ b/doc/pub/week13/html/week13-reveal.html
@@ -208,9 +208,11 @@ <h2 id="overview-of-week-april-15-19">Overview of week April 15-19 </h2>
 
 
 <!-- !bblock -->
-<!-- * <a href="https://youtu.be/SibaquLChg8" target="_blank">Video of lecture TBA</a> -->
-<!-- * <a href="https://github.com/CompPhysics/ComputationalPhysics2/blob/gh-pages/doc/HandWrittenNotes/2023/NotesApril20.pdf" target="_blank">Handwritten notes</a> -->
-<!-- !eblock -->
+<ul>
+<p><li> <a href="https://youtu.be/Hn2d8T-bS5E" target="_blank">Video of lecture</a></li>
+<p><li> <a href="https://github.com/CompPhysics/ComputationalPhysics2/blob/gh-pages/doc/HandWrittenNotes/2024/NotesApril19.pdf" target="_blank">Handwritten notes</a>
+<!-- !eblock --></li>
+</ul>
 </section>
 
 <section>
diff --git a/doc/pub/week13/html/week13-solarized.html b/doc/pub/week13/html/week13-solarized.html
index 15231d90..5874ca9c 100644
--- a/doc/pub/week13/html/week13-solarized.html
+++ b/doc/pub/week13/html/week13-solarized.html
@@ -270,10 +270,11 @@ <h2 id="overview-of-week-april-15-19">Overview of week April 15-19 </h2>
 
 
 <!-- !bblock -->
-<!-- * <a href="https://youtu.be/SibaquLChg8" target="_blank">Video of lecture TBA</a> -->
-<!-- * <a href="https://github.com/CompPhysics/ComputationalPhysics2/blob/gh-pages/doc/HandWrittenNotes/2023/NotesApril20.pdf" target="_blank">Handwritten notes</a> -->
-<!-- !eblock -->
-
+<ul>
+<li> <a href="https://youtu.be/Hn2d8T-bS5E" target="_blank">Video of lecture</a></li>
+<li> <a href="https://github.com/CompPhysics/ComputationalPhysics2/blob/gh-pages/doc/HandWrittenNotes/2024/NotesApril19.pdf" target="_blank">Handwritten notes</a>
+<!-- !eblock --></li>
+</ul>
 <!-- !split --><br><br><br><br><br><br><br><br><br><br>
 <h2 id="project-2-vmc-for-fermions-efficient-calculation-of-slater-determinants">Project 2, VMC for fermions: Efficient calculation of Slater determinants </h2>
 <div class="alert alert-block alert-block alert-text-normal">
diff --git a/doc/pub/week13/html/week13.html b/doc/pub/week13/html/week13.html
index 0c9fdeaa..ac2eb92d 100644
--- a/doc/pub/week13/html/week13.html
+++ b/doc/pub/week13/html/week13.html
@@ -347,10 +347,11 @@ <h2 id="overview-of-week-april-15-19">Overview of week April 15-19 </h2>
 
 
 <!-- !bblock -->
-<!-- * <a href="https://youtu.be/SibaquLChg8" target="_blank">Video of lecture TBA</a> -->
-<!-- * <a href="https://github.com/CompPhysics/ComputationalPhysics2/blob/gh-pages/doc/HandWrittenNotes/2023/NotesApril20.pdf" target="_blank">Handwritten notes</a> -->
-<!-- !eblock -->
-
+<ul>
+<li> <a href="https://youtu.be/Hn2d8T-bS5E" target="_blank">Video of lecture</a></li>
+<li> <a href="https://github.com/CompPhysics/ComputationalPhysics2/blob/gh-pages/doc/HandWrittenNotes/2024/NotesApril19.pdf" target="_blank">Handwritten notes</a>
+<!-- !eblock --></li>
+</ul>
 <!-- !split --><br><br><br><br><br><br><br><br><br><br>
 <h2 id="project-2-vmc-for-fermions-efficient-calculation-of-slater-determinants">Project 2, VMC for fermions: Efficient calculation of Slater determinants </h2>
 <div class="alert alert-block alert-block alert-text-normal">
diff --git a/doc/pub/week13/ipynb/ipynb-week13-src.tar.gz b/doc/pub/week13/ipynb/ipynb-week13-src.tar.gz
index 6134f5d7..6e58d990 100644
Binary files a/doc/pub/week13/ipynb/ipynb-week13-src.tar.gz and b/doc/pub/week13/ipynb/ipynb-week13-src.tar.gz differ
diff --git a/doc/pub/week13/ipynb/week13.ipynb b/doc/pub/week13/ipynb/week13.ipynb
index 12289bc6..6a2966ce 100644
--- a/doc/pub/week13/ipynb/week13.ipynb
+++ b/doc/pub/week13/ipynb/week13.ipynb
@@ -2,7 +2,7 @@
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     "2. Possible topics for the last two lectures, April 26 and May 3, Diffusion Monte Carlo calculations\n",
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     "<!-- !bblock -->\n",
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-    "<!-- * [Handwritten notes](https://github.com/CompPhysics/ComputationalPhysics2/blob/gh-pages/doc/HandWrittenNotes/2023/NotesApril20.pdf) -->\n",
+    "* [Video of lecture](https://youtu.be/Hn2d8T-bS5E)\n",
+    "\n",
+    "* [Handwritten notes](https://github.com/CompPhysics/ComputationalPhysics2/blob/gh-pages/doc/HandWrittenNotes/2024/NotesApril19.pdf)\n",
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-   "id": "da91356d",
+   "id": "48f4120d",
    "metadata": {
     "editable": true
    },
@@ -1118,7 +1119,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "96eb57b9",
+   "id": "831b8347",
    "metadata": {
     "editable": true
    },
@@ -1137,7 +1138,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "263ba88c",
+   "id": "89565b1c",
    "metadata": {
     "editable": true
    },
@@ -1149,7 +1150,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7c9a98cd",
+   "id": "91d09851",
    "metadata": {
     "editable": true
    },
@@ -1168,7 +1169,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8dceeaee",
+   "id": "0e162000",
    "metadata": {
     "editable": true
    },
@@ -1179,7 +1180,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4203efbf",
+   "id": "7c15b428",
    "metadata": {
     "editable": true
    },
@@ -1191,7 +1192,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "2da74283",
+   "id": "d2e83025",
    "metadata": {
     "editable": true
    },
@@ -1202,7 +1203,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d378249b",
+   "id": "1ea850e0",
    "metadata": {
     "editable": true
    },
@@ -1216,7 +1217,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "40b9fddd",
+   "id": "e35e652a",
    "metadata": {
     "editable": true
    },
@@ -1227,7 +1228,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "3198a673",
+   "id": "55c10078",
    "metadata": {
     "editable": true
    },
@@ -1239,7 +1240,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8fe12739",
+   "id": "ee534271",
    "metadata": {
     "editable": true
    },
@@ -1251,7 +1252,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "71d95d14",
+   "id": "ed29ca9f",
    "metadata": {
     "editable": true
    },
@@ -1266,7 +1267,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "12f72879",
+   "id": "373cebd9",
    "metadata": {
     "editable": true
    },
@@ -1278,7 +1279,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "3bf557ee",
+   "id": "278f9a6c",
    "metadata": {
     "editable": true
    },
@@ -1295,7 +1296,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "9c74b6d5",
+   "id": "279ed7f3",
    "metadata": {
     "editable": true
    },
@@ -1305,7 +1306,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "20963f74",
+   "id": "cca0c315",
    "metadata": {
     "editable": true
    },
@@ -1322,7 +1323,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "eb8148a6",
+   "id": "968bc085",
    "metadata": {
     "editable": true
    },
@@ -1333,7 +1334,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7231cac1",
+   "id": "05c04a98",
    "metadata": {
     "editable": true
    },
@@ -1350,7 +1351,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "aa828c33",
+   "id": "abb31837",
    "metadata": {
     "editable": true
    },
@@ -1361,7 +1362,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "fe1bec87",
+   "id": "c38ce95c",
    "metadata": {
     "editable": true
    },
@@ -1373,7 +1374,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b62dd7a3",
+   "id": "9de87d54",
    "metadata": {
     "editable": true
    },
@@ -1384,7 +1385,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "0511a40f",
+   "id": "6d7de2cc",
    "metadata": {
     "editable": true
    },
@@ -1396,7 +1397,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "bebc5ad1",
+   "id": "e95e1a8c",
    "metadata": {
     "editable": true
    },
@@ -1406,7 +1407,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d4fee09f",
+   "id": "432c7bf8",
    "metadata": {
     "editable": true
    },
@@ -1417,7 +1418,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a65b1de5",
+   "id": "f10a3f9c",
    "metadata": {
     "editable": true
    },
@@ -1432,7 +1433,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "9a308274",
+   "id": "d5127c16",
    "metadata": {
     "editable": true
    },
@@ -1450,7 +1451,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "9cb1a7de",
+   "id": "ff6c2906",
    "metadata": {
     "editable": true
    },
@@ -1461,7 +1462,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4875ecc8",
+   "id": "82c0da7d",
    "metadata": {
     "editable": true
    },
@@ -1477,7 +1478,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8bd1df6b",
+   "id": "90d50238",
    "metadata": {
     "editable": true
    },
@@ -1487,7 +1488,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d0d34969",
+   "id": "ef25ca8b",
    "metadata": {
     "editable": true
    },
@@ -1503,7 +1504,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d9a70888",
+   "id": "f6ce261b",
    "metadata": {
     "editable": true
    },
@@ -1514,7 +1515,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1c99027e",
+   "id": "f8d81d2a",
    "metadata": {
     "editable": true
    },
@@ -1532,7 +1533,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c1d23d7e",
+   "id": "4d60d253",
    "metadata": {
     "editable": true
    },
@@ -1543,7 +1544,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e0b82a7c",
+   "id": "833a6d8e",
    "metadata": {
     "editable": true
    },
@@ -1559,7 +1560,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a5543831",
+   "id": "c10c7d4e",
    "metadata": {
     "editable": true
    },
@@ -1570,7 +1571,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "68bde606",
+   "id": "ae45fec4",
    "metadata": {
     "editable": true
    },
@@ -1588,7 +1589,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "629810f8",
+   "id": "5d715c24",
    "metadata": {
     "editable": true
    },
@@ -1602,7 +1603,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d2572023",
+   "id": "d5078f22",
    "metadata": {
     "editable": true
    },
@@ -1614,7 +1615,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c15cf46e",
+   "id": "d1894a39",
    "metadata": {
     "editable": true
    },
@@ -1626,7 +1627,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7319640e",
+   "id": "939eeae2",
    "metadata": {
     "editable": true
    },
@@ -1638,7 +1639,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "eef802d5",
+   "id": "dcc91bb1",
    "metadata": {
     "editable": true
    },
@@ -1650,7 +1651,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "74bae4d4",
+   "id": "9540919f",
    "metadata": {
     "editable": true
    },
@@ -1662,7 +1663,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a3e38e60",
+   "id": "a8f9b58f",
    "metadata": {
     "editable": true
    },
@@ -1673,7 +1674,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f6f181c9",
+   "id": "65efa88e",
    "metadata": {
     "editable": true
    },
diff --git a/doc/pub/week13/pdf/week13-beamer.pdf b/doc/pub/week13/pdf/week13-beamer.pdf
index c12384a9..4e003cd7 100644
Binary files a/doc/pub/week13/pdf/week13-beamer.pdf and b/doc/pub/week13/pdf/week13-beamer.pdf differ
diff --git a/doc/pub/week13/pdf/week13.pdf b/doc/pub/week13/pdf/week13.pdf
index 98f76681..f0a6ce06 100644
Binary files a/doc/pub/week13/pdf/week13.pdf and b/doc/pub/week13/pdf/week13.pdf differ
diff --git a/doc/src/week13/week13.do.txt b/doc/src/week13/week13.do.txt
index ad2b23c7..e230ee86 100644
--- a/doc/src/week13/week13.do.txt
+++ b/doc/src/week13/week13.do.txt
@@ -12,8 +12,8 @@ o Possible topics for the last two lectures, April 26 and May 3, Diffusion Monte
 !eblock
 
 #!bblock
-#* "Video of lecture TBA":"https://youtu.be/SibaquLChg8"
-#* "Handwritten notes":"https://github.com/CompPhysics/ComputationalPhysics2/blob/gh-pages/doc/HandWrittenNotes/2023/NotesApril20.pdf"
+* "Video of lecture":"https://youtu.be/Hn2d8T-bS5E"
+* "Handwritten notes":"https://github.com/CompPhysics/ComputationalPhysics2/blob/gh-pages/doc/HandWrittenNotes/2024/NotesApril19.pdf"
 #!eblock