diff --git a/Doc/libmath.tex b/Doc/libmath.tex
index f70c741..e41edda 100644
--- a/Doc/libmath.tex
+++ b/Doc/libmath.tex
@@ -109,4 +109,6 @@
 The mathematical constant \emph{e}.
 \end{datadesc}
 
-See also the \code{cmath} versions of many of these functions.
+\begin{seealso}
+  \seemodule{cmath}{Complex number versions of many of these functions.}
+\end{seealso}