Ecν2⁢m+1⁡(z1,k2)⁢w2⁡(K)+w2⁡(-K)w2⁡(0)=-k2⁢sn⁡(z1,k)⁢∫-KKsn⁡(z,k)⁢ⅆ⁡Pν⁡(y)ⅆ⁡y⁢Ecν2⁢m+1⁡(z,k2)⁢ⅆ⁡z,