3-Dimensional Multilayered 6-vertex Statistical Model: Exact Solution
  Solvable via Bethe Ansatz (BA) anisotropic statistical model on cubic lattice consisting of locally interacting 6-vertex planes, is studied. Symmetries of BA lead to infinite hierarchy of possible phases, which is further restricted by numerical simulations. The model is solved for arbitrary value of the interlayer coupling constant. Resulting is the phase diagram in general 3-parameter space. Exact mapping onto the models with some inhomogenious sets of interlayer coupling constants is established. 
V. Popkov (SNU, Seoul, FTINT, Kharkov, Ukraine), B. Nienhuis   (University of Amsterdam)