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@@ -420,7 +420,7 @@ \subsection{Module 8: Software Maintenance Service}%
 \begin{itemize}
 \item The software needs to be developed according to software engineering best practices with a strong emphasis on testing and continuous integration.
 \item The RSE hub needs to be involved during the development period either through development or consultation services in order to ensure that best practices are followed and the required knowledge is transferred to the hub.
-\item A mechanism for selecting and prioritising software projects to be maintained needs to be in place.
+\item A mechanism for selecting and prioritising software projects to be maintained needs to be in place. For an overview of potential selection criteria see the section \textit{How to decide which software to sustain?} in~\cite{Anzt2021}.
 \end{itemize}
 
 \subsection{Module 9: Communication and Outreach}%