%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Gessner+Smerzi2023} Gessner, M., \& Smerzi, A. (2023). Hierarchies of Frequentist Bounds for Quantum Metrology: From Cramer-Rao to Barankin. \textit{Phys. Rev. Lett.}, \textit{130}(26), 260801--6pp.

\end{thebibliography}

\end{document}

