diff --git a/src/fa/duality/index.tex b/src/fa/duality/index.tex
index 13b2f04..eca8a4f 100644
--- a/src/fa/duality/index.tex
+++ b/src/fa/duality/index.tex
@@ -3,5 +3,6 @@
 
 \input{./definitions.tex}
 \input{./polar.tex}
+\input{./mackey.tex}