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%\cite{vafaei-najafabadi:napac2019-weyba4}
\bibitem{vafaei-najafabadi:napac2019-weyba4}
N. Vafaei-Najafabadi and L.D. Amorim,
\textquotedblleft{Beam Induced Ionization Injection of Shaped Electron Bunches}\textquotedblright,
% --- abbreviated form (UNpublished paper) - JACoW template Feb 2018 ---
presented at NAPAC'19, Lansing, MI, USA, Sep. 2019, paper WEYBA4, unpublished.