\documentclass{article}
\usepackage[latin1]{inputenc}
\usepackage{fullpage}
\begin{document}
\begin{itemize}
\section*{Papers}

\subsection*{International Journals}

\item[1] ``Scalar-Induced Gravitational Waves in Palatini f(R) gravity'', SS Lopez, JJT Diaz, J. Cosmol. Astropart. Phys. {\bf 12}, 029 (2025).

\end{itemize}
\end{document}