diff --git a/Sd1/swd1.xml b/Sd1/swd1.xml
index 129a8a38c99925ea6c4a25deef91863f1e5057e0..377d1275f797e9cf414e0c4f930588cb02e937ce 100644
--- a/Sd1/swd1.xml
+++ b/Sd1/swd1.xml
@@ -1743,7 +1743,16 @@ public void writeSvg() {
   <chapter xml:id="sd1CrabsFinish">
     <title>Lecture 6 - Finishing the crab scenario</title>
 
-    <para/>
+    <itemizedlist>
+      <listitem>
+        <para>Read chapter 3 of <xref linkend="bibKoelling2010Ger"/>.</para>
+      </listitem>
+
+      <listitem>
+        <para>Read Chapter 2 from <xref linkend="bibHorton2011"/> till
+        <quote>Mathematical Functions and constants</quote>.</para>
+      </listitem>
+    </itemizedlist>
   </chapter>
 
   <chapter xml:id="ideas">