%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Llobet_etal2008} {\textquotedblleft}\textit{Carbon nanotube TiO$_{2}$ hybrid films for detecting traces of O$_{2}$}{\textquotedblright}.  Llobet E, Espinosa EH, Sotter E, Ionescu R, Vilanova X, Torres J, Felten A, Pireaux JJ, Ke X, Van Tendeloo G, Renaux F, Paint Y, Hecq M, Bittencourt C;, Nanotechnology \textbf{19}, 375501 (2008).   http://doi.org/10.1088/0957-4484/19/37/375501

\end{thebibliography}

\end{document}

