%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Leca_etal2006} {\textquotedblleft}\textit{Superconducting single-phase Sr$_{1-x}$La$_{x}$CuO$_{2}$ thin films with improved crystallinity grown by pulsed laser deposition}{\textquotedblright}. Leca V, Blank DHA, Rijnders G, Bals S, Van Tendeloo G, Applied physics letters \textbf{89} (2006).   http://doi.org/10.1063/1.2339840

\end{thebibliography}

\end{document}

