%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Hoornaert_etal2003} {\textquotedblleft}\textit{Single particle characterisation of the aerosol in the marine boundary layer and free troposphere over Tenerife, NE Atlantic, during ACE-2}{\textquotedblright}. Hoornaert S, Godoi RHM, Van Grieken R, Journal of atmospheric chemistry \textbf{46}, 271 (2003).   http://doi.org/10.1023/A:1026383403878

\end{thebibliography}

\end{document}

