%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Trifonov_etal1996} Trifonov VA, Karasik BS, Zorin MA, Gol{\textquoteright}tsman GN, Gershenzon EM, Lindgren M, et al. 9.6 μm wavelength mixing in a patterned YBa$_{2}$Cu$_{3}$O$_{7-δ}$ thin film. In: Proc. 7$^{th}$ Int. Symp. Space Terahertz Technol.; 1996. p. 337--48.

\end{thebibliography}

\end{document}

