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\bibitem{Zimmermann_etal2017} Zimmermann, A., Webber, H., Zhao, G., Ewert, F., Kros, J., Wolf, J., et al. (2017). Climate change impacts on crop yields, land use and environment in response to crop sowing dates and thermal time requirements. \textit{Agric. Syst.}, \textit{157}, 81--92.

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