%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{10}

\bibitem{Boubekeur_etal2015} Boubekeur, L., Giusarma, E., Mena, O., \& Ramirez, H. (2015). Phenomenological approaches of inflation and their equivalence. \textit{Phys. Rev. D}, \textit{91}(8), 083006--8pp.

\end{thebibliography}

\end{document}

