%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Janssens_etal1994} {\textquotedblleft}\textit{Microscopic X-ray fluorescence analysis}{\textquotedblright}. Janssens K, Vincze L, Rubio J, Bernasconi G, Adams F, Journal of analytical atomic spectrometry \textbf{9}, 151 (1994).   http://doi.org/10.1039/JA9940900151

\end{thebibliography}

\end{document}

