%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Vos_etal1986} {\textquotedblleft}\textit{Determination of trace metals in rain water by differential-pulse stripping voltammetry}{\textquotedblright}. Vos L, Komy G, Reggers G, Roekens E, Van Grieken R, Analytica chimica acta \textbf{184}, 271 (1986).   http://doi.org/10.1016/S0003-2670(00)86491-0

\end{thebibliography}

\end{document}

