%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Esfahani_etal2014} {\textquotedblleft}\textit{Nonlinear response to electric field in extended Hubbard models}{\textquotedblright}. Esfahani DN, Covaci L, Peeters FM, Physical review : B : condensed matter and materials physics \textbf{90}, 205121 (2014).   http://doi.org/10.1103/PhysRevB.90.205121

\end{thebibliography}

\end{document}

