%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Wu_etal2011} {\textquotedblleft}\textit{Spin and momentum filtering of electrons on the surface of a topological insulator}{\textquotedblright}. Wu Z, Peeters FM, Chang K, Applied physics letters \textbf{98}, 162101 (2011).   http://doi.org/10.1063/1.3581887

\end{thebibliography}

\end{document}

