diff --git a/Makefile b/Makefile
index d238f11..1992456 100644
--- a/Makefile
+++ b/Makefile
@@ -7,7 +7,7 @@ DOCNAME = ObsCoreExtensionForRadioData
 DOCVERSION = 1.0
 
 # Publication date, ISO format; update manually for "releases"
-DOCDATE = 2026-04-29
+DOCDATE = 2026-05-04
 # What is it you're writing: NOTE, WD, PR, or REC
 DOCTYPE = PEN
 
diff --git a/ObsCoreExtensionForRadioData.tex b/ObsCoreExtensionForRadioData.tex
index 5aaa240..9b84e83 100644
--- a/ObsCoreExtensionForRadioData.tex
+++ b/ObsCoreExtensionForRadioData.tex
@@ -364,7 +364,9 @@ \subsection{Frequency characterization}
 
 For users willing to access spectral ranges in frequencies we can imagine several scenarios:
 \begin{itemize}
-	\item compute two free parameters \emph{f\_min} and \emph{f\_max} this way \emph{f\_min} = c / \emph{em\_max} and \emph{f\_max} = c / \emph{em\_min} with c = 299 792 458 m/s
+	\item compute two free parameters \emph{f\_min} and \emph{f\_max} this way : \\
+	\emph{f\_min} = c / \emph{em\_max} and \\
+	\emph{f\_max} = c / \emph{em\_min} with c = 299 792 458 m/s
 	\item express queries and results in terms of frequencies by using the same  formulae in the ADQL queries (see ~\ref{sec:FreqRanges})
 	\item let the interface do these conversions 	
 \end{itemize}