Maybe there is a distinction between "a Lorentzian function" and "the
Lorentzian" that I am unaware of... At least Benedetti uses the right
function.
\label{eq:model-psd-df}
\end{align}
-In order to avoid any uncertainty, we leave \cref{eq:model-psd}
-unnamed.
+However, \citet{benedetti12} has a solid derivation of
+\cref{eq:DHO-psd}, which he then refers to as the ``Lorentzian''. In
+order to avoid any uncertainty, we leave \cref{eq:model-psd} unnamed.
+I encourage future researchers to explicitly list the model they use,
+ideally by citing their associated open source calibration package.
\subsection{Peak frequency}
\label{sec:calibcant:peak-frequency}