Y. Hara \emph{et al.},
   "Dosimetric Verification of Lateral Profile with a Unique Ionization Chamber in Therapeutic Ion Beams",
   in Proc. 3rd International Beam Instrumentation Conference, Monterey, CA, USA, paper WEPF23, pp. 597–600,
    ISBN: 978-3-95450-141-0,
    \url{http://jacow.org/IBIC2014/papers/wepf23.pdf},
    2014.