Resolving ambiguities in mass determinations at future colliders
  The measurements of kinematical endpoints, in cascade decays of supersymmetric particles, in principle allow for a determination of the masses of the unstable particles. However, in this procedure ambiguities often arise. We here illustrate how such ambiguities arise. They can be resolved by a precise determination of the LSP mass, provided by the Linear Collider. 
B. K. Gjelsten, D. J. Miller, P. Osland