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\bibitem[{Fitschen et~al.(2017)Fitschen, Ma \& Schuff}]{fitschen2017removal}
\textsc{Fitschen, J.H., Ma, J. \& Schuff, S.} (2017). Removal of curtaining
  effects by a variational model with directional forward differences,
  \textit{Computer Vision and Image Understanding} \textbf{155}, 24--32.

\end{thebibliography}
