%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Perez+Romanelli2013} Perez, A., \& Romanelli, A. (2013). Spatially Dependent Decoherence and Anomalous Diffussion of Quantum Walks. \textit{J. Comput. Theor. Nanosci.}, \textit{10}(7), 1591--1595.

\end{thebibliography}

\end{document}

