%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Sierra_etal2019} Sierra, D. A., De Romeri, V., \& Rojas, N. (2019). CP violating effects in coherent elastic neutrino-nucleus scattering processes. \textit{J. High Energy Phys.}, \textit{09}(9), 069--22pp.

\end{thebibliography}

\end{document}

