∫0π/2J0⁡(2⁢q⁢(cos2⁡τ-sin2⁡ζ))⁢ce2⁢n⁡(τ,q)⁢ⅆ⁡τ=wII⁡(12⁢π;a2⁢n⁡(q),q)⁢ce2⁢n⁡(ζ,q),