diff --git a/contents/elliptic-genera.tex b/contents/elliptic-genera.tex
index 91c67c2448dbda776b02cbbe8ee38aa83d78e4d6..b496cb358ec46ef26ab87380685a4e9f98d9e507 100644
--- a/contents/elliptic-genera.tex
+++ b/contents/elliptic-genera.tex
@@ -318,11 +318,12 @@ From a computational point of view, one could say, that we now plug the Chern cl
We have $f(x)=1-e^{-x}$ in this case.
The associated genus is called \Index{Todd genus}.
This also gives the notion of the \Index{Todd class} and the associated multiplicative sequence is sometimes called \Index{Todd sequence}.
- We will denote the Todd class of a complex vector bundle $E$ by
+ We will denote the total Todd class of a complex vector bundle $E$ by
\[
\td(E)
\]
and use the usual conventions for $\td(M)$ and so on.
+ References: \cite[Ex.~III.11.11]{lawson_spin}
\end{example}