%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{15}

\bibitem{3594} Debora Gil, Oriol Ramos Terrades, \& Raquel Perez. (2021).<a href={\textquoteright}http://dx.doi.org/10.1007/978-3-030-84800-2_15{\textquoteright}{\textquoteright}> "Topological Radiomics (TOPiomics): Early Detection of Genetic Abnormalities in Cancer Treatment Evolution "</a> In \textit{Extended Abstracts GEOMVAP 2019, Trends in Mathematics 15} (Vol. 15, pp. 89--93). Springer Nature.

\end{thebibliography}

\end{document}

