%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Michielsen2019} Michielsen I (2019) Plasma catalysis : study of packing materials on CO2 reforming in a DBD reactor. 215 p

\end{thebibliography}

\end{document}

