%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Dik_etal2008} {\textquotedblleft}\textit{Visualization of a lost painting by Vincent van Gogh using synchrotron radiation based X-ray fluorescence elemental mapping}{\textquotedblright}. Dik J, Janssens K, van der Snickt G, van der Loeff L, Rickers K, Cotte M, Analytical chemistry \textbf{80}, 6436 (2008).   http://doi.org/10.1021/AC800965G

\end{thebibliography}

\end{document}

