Hierarchy of integrable Hamiltonians describing of nonlinear n-wave   interaction
  In the paper we construct an hierarchy of integrable Hamiltonian systems which describe the variation of n-wave envelopes in nonlinear dielectric medium. The exact solutions for some special Hamiltonians are given in terms of elliptic functions of the first kind. 
Anatol Odzijewicz and Tomasz Goli\'nski
math-ph math.MP nlin.SI