On the spin-spin correlation functions of the XXZ spin-1/2 infinite   chain
  We obtain a new multiple integral representation for the spin-spin correlation functions of the XXZ spin-1/2 infinite chain. We show that this representation is closely related with the partition function of the six-vertex model with domain wall boundary conditions. 
N. Kitanine, J.M. Maillet, N.A. Slavnov, V. Terras