%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Cervantes_etal2016} Cervantes, D., Fioresi, R., Lledo, M. A., \& Nadal, F. A. (2016). Quantum Twistors. \textit{P-Adic Num.}, \textit{8}(1), 2--30.

\end{thebibliography}

\end{document}

