%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{VanGrieken+Adams1976} {\textquotedblleft}\textit{Filter absorption correction for X-ray fluorescence analysis of aerosol loaded filters}{\textquotedblright}. Van Grieken R, Adams F,  (1976)

\end{thebibliography}

\end{document}

