%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Janssens_etal2000} Janssens KHA, Adams FCV, Rindby A (2000) Microscopic X-ray fluorescence analysis. 419 p

\end{thebibliography}

\end{document}

