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\bibitem{PC}
The pencil code. doi:10.5281/zenodo.2315093.
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\bibitem{Brandenburg:2021bfx}
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\bibitem{RoperPol:2022iel}
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\bibitem{DATA}
\url{http://norlx65.nordita.org/~brandenb/projects/GWfromSM/} contains data
  sets and run directories for the runs of Table~I.

\end{thebibliography}
