%&LaTeX
\documentclass{article}

\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{textcomp}

\begin{document}

\begin{thebibliography}{1}

\bibitem{Roetter+Hoehn2014} R{\"o}tter, R. P., \& H{\"o}hn, J. (2014). An overview of climate change impacts on crop production and its variability in Europe, related uncertainties and research challenges. (pp. 106--145). Chapter 4 in: Proceedings, FAO Expert consultation on Climate Change and Food Systems: Global implications for ~food security, water and trade, 5-6 Nov. 2013.

\end{thebibliography}

\end{document}

