Interesting papers

A. Donini, D. Meloni and P. Migliozzi, The silver channel at the Neutrino Factory. Nuclear Physics B646 (2002) 321-349.

D. Autiero et al. (8 co-authors), Synergy of the golden and silver channels at a Neutrino Factory. Europhysics Journal C33 (2004) 243-260.