Index: trunk/MagicSoft/TDAS-Extractor/Performance.tex
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--- trunk/MagicSoft/TDAS-Extractor/Performance.tex	(revision 5718)
+++ trunk/MagicSoft/TDAS-Extractor/Performance.tex	(revision 5721)
@@ -219,5 +219,5 @@
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-\subsubsection{Number of Photo-Electrons}
+\subsubsection{Number of Photo-Electrons \label{sec:photo-electrons}}
 
 Assuming that the readout chain is clean and adds only negligible noise with respect to the one