A.G.~Sosa, E.~Bravin, E.D.~Cantero, and C.P.~Welsch, "Optimization of a Short Faraday Cup for Low-Energy Ions Using Numerical Simulations", in Proc. 3rd International Beam Instrumentation Conference, Monterey, CA, USA, paper WEPF07, pp. 544–547, ISBN: 978-3-95450-141-0, \url{http://jacow.org/IBIC2014/papers/wepf07.pdf}, 2014.