 
The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{buesing:ipac2021-wepab079}
\bibitem{buesing:ipac2021-wepab079}
   B. Büsing, P. Hartmann, A. Held, S. Khan, C. Mai, D. Schirmer, and \emph{et al.},
%   B. Büsing, P. Hartmann, A. Held, S. Khan, C. Mai, D. Schirmer, and G. Schmidt,
%   B. Büsing \emph{et al.},
   \textquotedblleft{Optics Studies on the Operation of a New Wiggler and Bunch Shortening at the DELTA Storage Ring}\textquotedblright,
% --- abbreviated form (published paper) - JACoW template Feb 2018 ---
   in \emph{Proc. IPAC'21}, Campinas, SP, Brazil, May 2021, pp. 2772--2774.
   \url{doi:10.18429/JACoW-IPAC2021-WEPAB079}
% --- additional material -ISSN/ISBN--
%  ISBN: 978-3-95450-214-1, ISSN: 2673-5490