%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Lemmens_etal2000} {\textquotedblleft}\textit{Defect structure of the low temperature α-cristobalite phase and the cristobalite <-> tridymite transformation in (Si-Ge)O$_{2}$}{\textquotedblright}. Lemmens H, Czank M, Van Tendeloo G, Amelinckx S, Physics and chemistry of minerals \textbf{27}, 386 (2000).   http://doi.org/10.1007/s002699900082

\end{thebibliography}

\end{document}

