%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Wang_etal2011} {\textquotedblleft}\textit{Coherent relativistic wake wave of a charged object moving steadily in a plasma}{\textquotedblright}. Wang Y, Yu MY, Chen ZY, Physica scripta \textbf{84}, 025501 (2011).   http://doi.org/10.1088/0031-8949/84/02/025501

\end{thebibliography}

\end{document}

