diff --git a/article_de_rham_cyclic.synctex.gz b/article_de_rham_cyclic.synctex.gz
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diff --git a/article_de_rham_cyclic.tex b/article_de_rham_cyclic.tex
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--- a/article_de_rham_cyclic.tex
+++ b/article_de_rham_cyclic.tex
@@ -442,7 +442,11 @@ shows that $m_{\sigma - 1}$ is well-defined and injective.
 	%
 	Assume now that $Q \in B_{Y'/Y}$. Then there exists a unique point $Q' \in Y'(k)$
 	in the preimage of $Q$ through $Y' \to Y$. Moreover, $m_{X/Y, Q} = n$, $m_{X/Y', Q'} = n-1$. 
-	Recall also that by \cite[???]{Serre1979} there exist integers $i_{X/Y, P}^{(0)}, i_{X/Y, P}^{(1)}, \ldots$ such that for every $t \ge 0$:
+	Recall also that by 
+	{\color{red}
+	\cite[Example p.76]{Serre1979}
+	 }
+	there exist integers $i_{X/Y, P}^{(0)}, i_{X/Y, P}^{(1)}, \ldots$ such that for every $t \ge 0$:
 	%
 	\begin{align*}
 		u_{X/Y, P}^{(t)} &= i_{X/Y, P}^{(0)} + i_{X/Y, P}^{(1)} + \cdots + i_{X/Y, P}^{(t-1)}\\