M.T.~Switka, F.~Frommberger, P.~Hänisch, W.~Hillert, and M.~Schedler,
   "Dual Transverse and Longitudinal Streak Camera Imaging at ELSA",
   in Proc. 3rd International Beam Instrumentation Conference, Monterey, CA, USA, paper MOPD05, pp. 144–146,
    ISBN: 978-3-95450-141-0,
    \url{http://jacow.org/IBIC2014/papers/mopd05.pdf},
    2014.