Analytic continuation of 3-point functions of the conformal field theory
  It is shown that the general 3-point function $<\Phi_{a} \Phi_{b} \Phi_{c}>$, with continuous values of charges $a, b, c$ of a statistical model operators, and the 3-point function of the Liouville model, could all be obtained by successive analytical continuations starting from the 3-point function of the minimal model. 
Vladimir S. Dotsenko
hep-th cond-mat.stat-mech