%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Verbruggen_etal2013} {\textquotedblleft}\textit{Predicting the surface plasmon resonance wavelength of gold-silver alloy nanoparticles}{\textquotedblright}. Verbruggen SW, Keulemans M, Martens JA, Lenaerts S, The journal of physical chemistry: C : nanomaterials and interfaces \textbf{117}, 19142 (2013).   http://doi.org/10.1021/JP4070856

\end{thebibliography}

\end{document}

