Symmetry Flows, Conservation Laws and Dressing Approach to the   Integrable Models
  The graded affine Lie algebras provide a framework in which the dressing method is applied to the generic type of integrable models. The dressing formalism is used to develop a unified approach to various symmetry flows encountered among the integrable hierarchies and to describe related conservation laws. 
H. Aratyn, J.F. Gomes, E. Nissimov, S. Pacheva and A.H. Zimerman