%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Schattschneider_etal2012} {\textquotedblleft}\textit{Novel vortex generator and mode converter for electron beams}{\textquotedblright}. Schattschneider P, Stoeger-Pollach M, Verbeeck J, Physical review letters \textbf{109}, 084801 (2012).   http://doi.org/10.1103/PhysRevLett.109.084801

\end{thebibliography}

\end{document}

