%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{deKeyser_etal1997} {\textquotedblleft}\textit{Modification of the 2D electronic properties in Si-δ-doped InSb due to surface effects}{\textquotedblright}. de Keyser A, Bogaerts R, van Bockstal L, Herlach F, Karavolas VC, Peeters FM, van de Graaf W, Borghs G, , 383 (1997)

\end{thebibliography}

\end{document}

