Equation Icon  { --------------} G (s,λ,ζ,ζ) = 1- G(s + iλ,ζ,ζ) + G (s + iλ, ζ,ζ) , (93 ) R 2 -- 1 { -- --------------} GI (s,λ,ζ,ζ) = 2- G(s + iλ,ζ,ζ) − G (s + iλ, ζ,ζ) . (94 )