%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{3321} Hamed H. Aghdam, Abel Gonzalez-Garcia, Joost Van de Weijer and Antonio Lopez. 2019. Active Learning for Deep Detection Neural Networks. \textit{18th IEEE International Conference on Computer Vision}.3672--3680.

\end{thebibliography}

\end{document}

