%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Hoornaert_etal2004} {\textquotedblleft}\textit{Elemental and single particle aerosol characterisation at a background station in Kazakhstan}{\textquotedblright}. Hoornaert S, Godoi RHM, Van Grieken R, Journal of atmospheric chemistry \textbf{48}, 301 (2004).   http://doi.org/10.1023/B:JOCH.0000044432.74476.B0

\end{thebibliography}

\end{document}

