JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
%\cite{szewinski:icalepcs2021-tupv024} \bibitem{szewinski:icalepcs2021-tupv024} J. Szewiński, P.R. Bartoszek, K. Chmielewski, K. Kostrzewa, T. Kowalski, P. Markowski, \emph{et al.}, % J. Szewiński, P.R. Bartoszek, K. Chmielewski, K. Kostrzewa, T. Kowalski, P. Markowski, D. Rybka, M. Sitek, and Z. Wojciechowski, % J. Szewiński \emph{et al.}, \textquotedblleft{Preliminary Design of LLRF System for Polfel Accelerator}\textquotedblright, % --- abbreviated form (UNpublished paper) - JACoW template Feb 2018 --- presented at ICALEPCS'21, Shanghai, China, Oct. 2021, paper TUPV024, unpublished.