W.LC. Le Coz \emph{et al.},
   "Progress on the Beam Energy Monitor for the SPIRAL2 Accelerator.",
   in Proc. 3rd International Beam Instrumentation Conference, Monterey, CA, USA, paper WEPF29, pp. 617–619,
    ISBN: 978-3-95450-141-0,
    \url{http://jacow.org/IBIC2014/papers/wepf29.pdf},
    2014.