%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{5}

\bibitem{Yagoubov_etal1998} Yagoubov, P., Kroug, M., Merkel, H., Kollberg, E., Schubert, J., Hubers, H. - W., et al. (1998). Performance of NbN phonon-cooled hot-electron bolometric mixer at Terahertz frequencies. In \textit{Proc. 6-th Int. Conf. Terahertz Electron.} (pp. 149--152).

\end{thebibliography}

\end{document}

