1. 1. See, e.g. G. Pasztor, M. Perelstein, SNOWMASS-2001-P315, November 2001, hep-ph/0111471
2. 2. T.G. Rizzo, SLAC-PUB-9295, hep-ph/0208027
3. 3. E. Eichten, K. Lane, M.E. Peskin, Phys. Rev. Lett. 50, 811 (1983)
4. 4. TESLA Technical design report, Pt. 2, edited by R. Brinkmann, K. Flottmann, J. Rossbach, P. Schmuser, N. Walker, H. Weise, DESY-01-011 (2001)
5. 5. Linear collider physics resource book for Snowmass 2001, T. Abe et al., SLAC-R-570