Notes:
The number and redshift distribution of galaxy clusters found in SZE surveys can place strong constraints on the matter density, the vacuum energy density, and the normalization of the matter power spectrum. The degeneracies between these parameters is different from those in studies of high-z Type Ia SN or CMB anisotropies. With complete z information constraints of order 5% can be expected for all parameters.
(see Holder, Haitman, Mohr 2001, ApJ 560, L111)