equation icon  1 integral q(CRD)(xs;z) = ------ P (CRD)(ks;z)exp( -iks .xs)d3ks (164) (2p)3 integral --1--- (S) 3 = (2p)3 P (k;z) exp(- ik .x)d k (165) = q(S)(c _L xs _L ,c||xs||;z), (166)