%0 Journal Article
%A Martínez Alonso, Luis
%A Shabat, A. B.
%T Energy-dependent potentials revisited: a universal hierarchy of hydrodynamic type
%D 2002
%@ 0375-9601
%U https://hdl.handle.net/20.500.14352/59824
%X A hierarchy of infinite-dimensional systems of hydrodynamic type is considered and a general scheme for classifying its reductions is provided. Wide families of integrable systems including, in particular, those associated with energy-dependent spectral problems of Schrodinger type, are characterized as reductions of this hierarchy. N-phase type reductions and their corresponding Dubrovin equations are analyzed. A symmetry transformation connecting different classes of reductions is formulated.
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