%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{10}

\bibitem{Hellmann+Ruiz-Femenia2013} Hellmann, C., \& Ruiz-Femenia, P. (2013). Non-relativistic pair annihilation of nearly mass degenerate neutralinos and charginos II. P-wave and next-to-next-to-leading order S-wave coefficients. \textit{J. High Energy Phys.}, \textit{08}(8), 084--49pp.

\end{thebibliography}

\end{document}

