%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Yagoubov_etal1996} Yagoubov P, Gol{\textquoteright}tsman G, Voronov B, Svechnikov S, Cherednichenko S, Gershenzon E, et al. Quasioptical phonon-cooled NbN hot-electron bolometer mixer at THz frequencies. In: Proc. 7$^{th}$ Int. Symp. Space Terahertz Technol.; 1996. p. 303--17.

\end{thebibliography}

\end{document}

