Equation Icon  9π2 ∫ zs ( X )2 1 ( ℓ)n Φ ( Φ (z) )2 Pκ(ℓ) = ---- 1 − --- -----δ2H --- T2(x) --wl---- dz, (13.12 ) 2 0 Xs E (z) X Φwl(zI)