%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Ramael_etal1992} Ramael M, van den Bossche J, Buysse C, Van Marck E (1992) Nucleolar organizer regions in mesothelial proliferations. 435

\end{thebibliography}

\end{document}

