1. Aizenberg, I.A., Yuzhakov, A.P.: Integral Representations and Residues in Multidimensional Complex Analysis. American Mathematical Society, Graduate texts in Mathematics, vol. 58 (1978)
2. Berkovich A., Murthy G.: Time-dependent multi-point correlation functions of the non-linear Schrödinger model. Phys. Lett. A142, 121–127 (1989)
3. Blöte H.W.J., Cardy J.L., Nightingale M.P.: Conformal invariance, the central charge, and universal finite-size amplitudes at criticality. Phys. Rev. Lett. 56, 742–745 (1986)
4. Bogoliubov, N.M., Izergin, A.G., Korepin, V.E.: Quantum Inverse Scattering Method, Correlation Functions and Algebraic Bethe Ansatz. Cambridge monographs on mathematical physics (1993)
5. Bogoliubov N.M., Izergin A.G., Korepin V.E.: Finite-size effects and critical indices of 1D quantum models. Pisma ZhETF 44, 405–407 (1986)