%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Baij_etal2021} {\textquotedblleft}\textit{Understanding and optimizing Evolon{\textregistered} CR for varnish removal from oil paintings}{\textquotedblright}. Baij L, Liu C, Buijs J, Alvarez Martin A, Westert D, Raven L, Geels N, Noble P, Sprakel J, Keune K, Heritage science \textbf{9}, 155 (2021).   http://doi.org/10.1186/S40494-021-00627-9

\end{thebibliography}

\end{document}

