%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Krekels_etal1992} {\textquotedblleft}\textit{Ortho-II structure in ABa$_{2}$Cu$_{3}$O$_{7-\delta}$ compounds (A=Er, Nd, Pr, Sm, Yb)}{\textquotedblright}. Krekels T, Zou H, Van Tendeloo G, Wagener D, Buchgeister M, Hosseini SM, Herzog P, Physica: C : superconductivity \textbf{196}, 363 (1992).   http://doi.org/10.1016/0921-4534(92)90458-O

\end{thebibliography}

\end{document}

