%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{VanGrieken_etal1976} {\textquotedblleft}\textit{Geophysical applicability of aerosol size distribution measurements using cascade impactors and proton-induced X-ray-emission}{\textquotedblright}. Van Grieken RE, Johansson TB, Akselsson KR, Winchester JW, Nelson JW, Chapman KR, Atmospheric environment : an international journal \textbf{10}, 571 (1976).   http://doi.org/10.1016/0004-6981(76)90040-8

\end{thebibliography}

\end{document}

