  The description of the two sets of (4,0) supersymmetric models that are
related by non-abelian duality transformations is given. The (4,0)
supersymmetric WZNW is constructed and the formulation of the (4,0)
supersymmetric sigma model dual to (4,0) supersymmetric WZNW model in the sense
of Poisson-Lie T-duality is described.
