title: Problem with printing the bibliography on my beamer presentation
body: <p>I can't find why my bibliography in my beamer does not show a numeric citation, but this paper symbol...
  Any help?
  Thanks
  <a href="https://i.stack.imgur.com/vhoiF.png" rel="nofollow noreferrer">biblio photo</a></p>
  <pre><code>\usepackage[backend=biber,style=numeric, citestyle=ieee]{biblatex}
  \addbibresource{ref.bib} %Imports bibliography file
  
  
  \section{Bibliographie}
  \begin{frame}[t,allowframebreaks]
  \frametitle{Bibliographie}
  \printbibliography[heading=none]
  %\bibliography{ref}
  
  \end{frame}
  </code></pre>