%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Tavernier_etal1981} {\textquotedblleft}\textit{Hard-spere model for hydrodynamic chromatography systems}{\textquotedblright}. Tavernier SMF, Nies E, Gijbels R, Analytical proceedings \textbf{18}, 31 (1981).   http://doi.org/10.1039/AP9811800031

\end{thebibliography}

\end{document}

